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2007 4th International Conference on Electrical and Electronics Engineering (ICEEE 2007) and XIII Conferencia de Ingeniería Eléctrica (CIE 2007) Mexico City, Mexico September 5-7, 2007 Final Program & Abstract Book Final Program & Abstract Book Departamento de Ingeniería Eléctrica Centro de Investigación y de Estudios Avanzados del I.P.N. 7 iceee Tláloc The god of rain and fertility National Museum of Anthropology and History in Mexico City

Final Program & Abstract Book - CINVESTAV€¦ · Final Program & Abstract Book Departamento de Ingeniería Eléctrica Centro de Investigación y de Estudios Avanzados del I.P.N

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2007 4th International Conference on Electrical andElectronics Engineering (ICEEE 2007) and

XIII Conferencia de Ingeniería Eléctrica (CIE 2007)Mexico City, MexicoSeptember 5-7, 2007

Final Program & Abstract BookFinal Program & Abstract Book

Departamento de Ingeniería EléctricaCentro de Investigación y de Estudios Avanzados del I.P.N.

7iceee

TlálocThe god of rain andfertilityNational Museum ofAnthropology andHistory in Mexico City

Centro de Investigacion y de Estudios Avanzados del IPNDepartamento de Ingenierıa Electrica

2007 4th International Conference onElectrical and Electronics Engineering

(2007 4th ICEEE)Mexico City

September 5-7, 2007

Final Program & Abstract Book

http://www.ie.cinvestav.mxhttp://iceee.ie.cinvestav.mx

2 2007 4th ICEEE

This book was elaborated using LATEX2e.Copyright c© 2007 Cinvestav,August 2007

2007 4th ICEEE 3

Contents

Message from the Podium 4

2007 4th ICEEE Organizing Committee 4

Topic Chairs 6

Reviewers 7

Final Program 10

Courses 18

Round table session 20

General Information 21

Keynote Speakers 22

Plenary Conferences Abstracts 23

Abstract Book 26

Autor Index 54

4 2007 4th ICEEE

Message from the Podium

Dear Colleagues:

I am Honored to preside the Fourth International Electrical Engineering Congress.The evolution of the congress has been reflected in the broad diversity and high qualityof the papers presented. We have received papers from various parts of the world,enabling us to share experiences in research and development. The main goal of thiscongress is precisely to share and integrate experiences in the disciplines we fosterat our institution with other prestigious International Institutions. The connections wehave with our colleagues, through work on related projects, will allow us to better ourgraduate programs and contribution to society. Thanks to the hard work of the orga-nizing committee, as well as to the anonymous but extremely important work of therevisors, the best theoretical-experimental papers of the specialty have been selectedfor presentation at our Congress. As President of the Congress, I thank the organizingcommittee, the offices of the Director and the Head of the Department, the revisors,and all of those who have directly or indirectly made the Congress possible. I inviteyou to share the academic stay of our guests and enjoy the City of Palaces, with itsmagnificent museums and pre-Hispanic surroundings.

I welcome you all to your Congress.

PHD Arturo Minor Martınez

2007 4th ICEEE Organizing Committee

Dr. Arturo Minor Martınez(General Chair)

Dr. Luis Gerardo de la Fraga(Proceedings Editor)

Dr. Aldo Orozco Lugo(Technical Program)

Dr. Ernesto Suaste-Gomez(Industrial Relations and Exhibit)

Dr. Carlos Alvarado Serrano(Logistic and courses)

2007 4th ICEEE 5

Technical Support

Judith Esparza(System and On-Line Submission)

Ricardo Gomez(Exhibiting Assistant)

Cinvestav’s Conference Management System(On-Line Paper Submission and Reviewing System,a free software available upon request)

6 2007 4th ICEEE

Topic Chairs

• Bioengineering and Medical Electronics

Dr. Roberto Munoz

• Communication Systems

Raul Garcıa Ruiz

• Computer Science

Dra. Ana Marıa Martınez Enrıquez

• Electronic Circuits

• Solid-State Electronics and VLSI

Dr. Felipe Gomez Castaneda

• Electrical Power

Dr. Abraham Claudio Sanchez (CENIDET)

• Mechatronics and Automatic Control

Dr. Alejandro Rodrıguez Angeles

• Semiconductor Materials

Dr. Ramon Pena Sierra

2007 4th ICEEE 7

Reviewers

Abraham Claudio Sanchez . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CENIDETAldo G. Orozco-Lugo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAV-IPNAlejandro Rodriguez Angeles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAVAlejandro Avila Garcia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAVAlfredo Odon Rodriguez . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . UAM IztapalapaAndres Ivan Oliva Arias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cinvestav IPN, Unidad MeridaAntonio Cerdeira . . . . . . . . . . . . . . . . . . . Department of Electrical Engineering, Cinvestav.Antonio Marin-Hernandez . . . . . . . . . . . . . . . . . Facultad de Fisica e Inteligencia Artificial

Universidad VeracruzanaAntonio F Mondragon Torres . . . . . . . . . . . . . . . . . . . . . . . . Texas Instruments, Dallas, USAArturo Velazquez Ventura . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CICESEArturo Berrones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Universidad Autonoma de Nuevo LeonArturo Veloz Guerrero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intel Tecnologia de MexicoCarlos Alvarado-Serrano . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAV-IPNCarlos A De La Cruz Blas . . . . . . . . . . . . . . . . . . . . Universidad Publica de Navarra. SpainCarlos Alberto Cruz Villar . . . . . . CINVESTAV-IPN, Electrical Engineering DepartmentChristopher Druzgalski . . . . . . . . . . . . . . . . California State University, Long Beach, USAClaudio Castellanos Sanchez . . . . . . . . . . . . . . . . . . . . . . . . . LTI del Cinvestav-TamaulipasDaniel Ulises Campos-Delgado . . . . . . . . . . Universidad Autonoma de San Luis Potosı

Facultad de CienciasDavid Salazar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CICESEDebrup Chakraborty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAV-IPNDecouchant Dominique . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (1) Laboratoire LIG Grenoble -

France (2) Dpto de Computacion - CINVESTAV-IPN - MexicoDemetrio Villanueva . . . . . . . . . . . . . . . . . . . . . . . . . . . Centro de Neuro Rehabilitacion AbrilDeniz Ozdemir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Universidad Autonoma de Nuevo Leon,

FIME - Posgrado en Ing. de SistemasEfrain Alcorta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Universidad Autonoma de Nuevo LeonElisa Schaeffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Universidad Autonoma de Nuevo LeonEnrique Daltabuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CEM Polanco DGSCA UNAMFederico Sandoval-Ibarra . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAV-Guadalajara UnitFelipe Gomez Castaneda . . . CINVESTAV-IPN, Departamento de Ingenierıa ElectricaFernando Lopez . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Autonomous University of Nuevo LeonFernando Martin Montes Gonzalez . . . . . . . . . . . . . . . . . . . . . . . . Universidad VeracruzanaFrancisco J. de Anda Salazar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ICCO-UASLPFrancisco Javier Gonzalez . . . . . . . Instituto de Investigacion en Comunicacion Optica,

Universidad Autonoma de San Luis PotosiGeorge Moore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . University of UlsterGiselle Galvan-Tejada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAV-IPNGuillermo Morales-Luna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cinvestav-IPNGuillermo de Jesus Hoyos Rivera . . . . . . . . . . . . . . . . . . . . . . . . . . Universidad VeracruzanaHebertt Sira Ramirez . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cinvestav-IPNhector benitez-perez . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IIMAS UNAM

8 2007 4th ICEEE

Hector-Gabriel Acosta-Mesa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Universidad VeracruzanaHernandez Matos Erique Luis . . . . . . . . . . . . . . . . . Universidad Autonoma Metropolitana

Unidad IztapalapaHugo Rodriguez Cortes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAVIeroham Baruch . . . . . . . . . . . . . . . . . . . . . . . CINVESTAV-IPN, Dept. of Automatic ControlIgor Litvinchev . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Universidad Autonoma de Nuevo Leon

Facultad de Ingenieria Mecanica y Electrica Posgrado en Ingenieria de SistemasIvan Lopez-Arevalo . . . . . . Laboratory of Information Systems (Cinvestav Tamaulipas)Jaime Leybon Ibarra . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instituto Nacional de RehabilitacionJavier E. Gonzalez Villarruel eduardo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ITESM CEMJorge Alberto Morales-Saldana . . . . . . . . . . . Universidad Autonoma de San Luis Potosi

Facultad de IngenieriaJose Hoyo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instituto Tecnologico de HermosilloJose Guadalupe Rodriguez Garcia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cinvestav-IPNJose Luis Medina Monroy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CICESEJose Miguel Rocha Perez . . . . . Instituto Nacional De Astrofisica, Optica y ElectronicaJosefina Gutierrez Martinez . . . . . . . . . . . . . . . . . . . . . Instituto Nacional de RehabilitacionJuan Humberto Sossa Azuela . . . . . . . . . . . . . Centro de Investigacion en Computacion

Instituto Politecnico NacionalJuan Manuel Hernandez Cid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ITESOLluis Marsal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . University Rovira i VirgiliLuis Gerardo Vela Valdes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CENIDETLuis Gerardo de la Fraga . . . . . . . . . . . . . . . . . Computer Science Department, Cinvestav.Manuel Aguilar Cornejo . . . . Universidad Autonoma Metropolitana Unidad IztapalapaMarco I. Ramirez-Sosa . Robotica y Manufactura Avanzada Cinvestav Unidad SaltilloMariano Aceves Mijares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INAOEMario Alfredo Reyes Barranca . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cinvestav-IPNMartin Velasco Villa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAV-IPNMartinez Enriquez Ana Maria . . . . . . . . . . CINVESTAV, Computer Science DepartmentMauricio Lara . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cinvestav-IPNMauricio Cabrera-Rios . . . . . . . . . . . . . . . . . . . . . . . Universidad Autonoma de Nuevo Leon

Posgrado en Ingenierıa de SistemasMaximo Lopez Lopez . . . . . . . . . . . . . . . . . . . . . . . . . . . Physics Department, Cinvestav-IPNMiguel Garcia Rocha . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Physics Department/CINVESTAVNicandro Cruz Ramirez . . . . . . . . . . . . . . . . . . . . . . . . . . . . Facultad de Fisica e Inteligencia

Artificial Universidad VeracruzanaOliverio Arellano Cardenas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CinvestavOscar Infante . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instituo Nal. de CardiologıaPedro Mejia Alvarez . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAV-IPNRafael Castro-Linares . . . . . . . . CINVESTAV-IPN Department of Electrical EngineeringRamon Pena Sierra . . . . . . . . . . . . . . . . . Electrical Engineering Department/CINVESTAVRamon Parra-Michel . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAV-IPN, Campus GuadalajaraRichard Marquez . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cinvestav-IPNRoberto Munoz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAVRodolfo Quintero Romo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAV

2007 4th ICEEE 9

Ruben Garrido . . . . . . . . . . . . . . CINVESTAV-IPN. Departamento de Control AutomaticoSanchez- Salguero Hugo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LIPSE-ESIME-IPNSilva-Navarro Gerardo . . . . . . . . . . . . . . . . . . . . . . CINVESTAV-IPN, Mechatronics SectionSonia Guadalupe Mendoza Chapa Departamento de Computacion CINVESTAV-IPNVicente Parra Vega . . Robotica y Manufactura Avanzada Unidad Saltillo CINVESTAVVictor Rangel Licea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Facultad de Ingenieria, UNAMVICTOR CARDENAS . . . . . . . . . . . . . . . . . . . . Universidad Autonoma de San Luis PotosiVictor-Manuel Ramos-Ramos . . . . . . Universidad Autonoma Metropolitana-IztapalapaYasuhiro Matsumoto . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CINVESTAV-IPN

10 2007 4th ICEEE

Final Program

Wednesday 5, September 2007Room 1 Room 2 Room 3

8:30 9:30 Registration9:30 9:50 Opening Ceremony

10:00 11:00 PLE1 CS1 BIO111:00 11:30 Break Break Break11:30 12:30 MEC1 CS2 BIO212:30 13:30 MEC1 CS2 BIO213:30 15:00 Lunch Lunch Lunch15:00 16:00 MEC2 COM1 SSE116:00 17:00 MEC2 COM1 SSE117:00 18:00 – – –18:00 – Welcome cocktail

Thursday 6, September 2007Room 1 Room 2 Room 3

9:00 10:00 BIO3 MEC3 EP10:00 11:00 PLE2 MEC3 EP11:00 11:30 Break Break Break11:30 12:30 PLE3 CS3 SSE212:30 13:30 Round-T CS3 SSE213:30 15:00 Lunch Lunch Lunch15:00 17:00 COM2 – SSE3

Friday 7, September 2007Room 1 Room 2 Room 3

9:00 10:00 – EC1 SEM110:00 11:00 PLE4 EC1 –11:00 11:30 Break Break Break11:30 12:30 PLE5 EC2 SEM213:00 – Closing Ceremony

Symbol list: BIO Bioengineering and Medical Electronics

COM Communication Systems

CS Computer Science

EC Electronic Circuits

EP Electrical Power

MEC Mechatronics and Automatic Control

PLE Plenary conference

Round-T Round Table

SEM Semiconductor Materials

SSE Solid-State Electronics and VLSI

2007 4th ICEEE 11

1 BIO1 Bioengineering and Medical ElectronicsWednesday 10:00–11:00 Room 3Chair: Dr. Arturo Minor

1.1. 10:00–10:20 Modeling Chromatic Pupillary Responses in Healthy People . . . . . . 26

1.2. 10:20–10:40 Epoch Parameterization by Gabor Atom Density in ExperimentalEpilepsy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

1.3. 10:40–11:00 Assistant System For aid in the Interlocking of Intramedullary NailsUsed to Fix Long Bones Fractured . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

2 BIO2 Bioengineering and Medical ElectronicsWednesday 11:30–13:50 Room 3Chair: Dr. Arturo Vera

2.1. 11:30–11:50 A Hands Gesture System Of Control For An Intelligent Wheelchair.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2.2. 11:50–12:10 Dispersion of Ratios of Ventricular Repolarization Intervals in Nor-mal Subjects and Old Myocardial Infarction Patients . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2.3. 12:10–12:30 Development of lead-free (Bi1/2Na1/2)BaTiO3 Piezoelectric Ceram-ics for clinical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2.4. 12:30–12:50 Pupillary response interpretation to white noise audible stimuli . . . 28

2.5. 12:50–13:10 Development of an Educational Simulator and Graphical User Inter-face for Diabetic Patients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2.6. 13:10–13:30 CT-Projections Hardware Raw Data Acquisition System for ImageReconstruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3 BIO3 Bioengineering and Medical ElectronicsThursday 9:00–10:00 Room 1Chair: Dr. Enrique Chong

3.1. 9:00–9:20 Design of a Transcutaneous Electrical Stimulator to Avoid the Postop-erative Intestinal Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.2. 9:20–9:40 Electrocardiograph of Twelve Derivations, Low Current Consumption,Powered and Communicated for USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.3. 9:40–10:00 On-line Simulation Tool for the Design and Analysis of Lower-limbProsthetic Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

12 2007 4th ICEEE

4 COM1 Communication SystemsWednesday 15:00–17:00 Room 2Chair: Dr. Aldo Orozco

4.1. 15:00–15:20 An Efficient Architecture for Detection of Linear Dispersion Space-Time Codes Based on QR Decomposition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.2. 15:20–15:40 Digital Channel Modeling through Chaotic Generators . . . . . . . . . . . . 30

4.3. 15:40–16:00 Distributed Power Control Algorithms in the Uplink of Wireless Sys-tems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.4. 16:00–16:20 Sampling Reconstruction Procedure for a Markovian Gaussian Non-stationary Process in the presence of Jitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.5. 16:20–16:40 Frequency Offset Estimation and Compensation Using Superim-posed Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.6. 16:40–17:00 HAP-Based Monitoring of the Emissions Produced by TerrestrialMicrowave Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5 COM2 Communication SystemsThursday 15:00–16:40 Room 1Chair: Dr. Mauricio Lara

5.1. 15:00–15:20 Improved carrier frequency offset estimation using data-dependentsuperimposed training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.2. 15:20–15:40 Analysis and Comparison of Optimized Multi-Pump Distributed Ra-man Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.3. 15:40–16:00 160 Gb/s XOR Gate Using Bulk SOA Turbo-Switched Mach-ZehnderInterferometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.4. 16:00–16:20 Distributed Power Control Performance in DS-CDMA Systems withAdaptive Quantization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.5. 16:20–16:40 Linear Dispersion Codes Generation from Hybrid STBC-VBLASTArchitectures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6 CS1 Computer ScienceWednesday 10:00–11:00 Room 2Chair: Dr. Felipe Gomez

6.1. 10:00–10:20 Multi-Class Support Vector Machines for Large Data Sets via Mini-mum Enclosing Ball Clustering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

2007 4th ICEEE 13

6.2. 10:20–10:40 Qubits structure and coherence in a one-way quantum computer . 34

6.3. 10:40–11:00 A method for designing CNN templates . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7 CS2 Computer ScienceWednesday 11:30–13:30 Room 2Chair: Dr. Gerardo de la Fraga

7.1. 11:30–11:50 Fragile Watermarking for Color Image Authentication . . . . . . . . . . . . . 34

7.2. 11:50–12:10 The Extreme Vertices Model in the n-Dimensional Space (nD-EVM):A Novel Representation Scheme for Orthogonal Polytopes . . . . . . . . . . . . . . . . . . . . 35

7.3. 12:10–12:30 Realtss: a real-time scheduler simulator . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.4. 12:30–12:50 Reinforcement Learning and Dynamic Planning Applied to VirtualHumans Animation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.5. 12:50–13:10 A µ-Calculus Approach for the Synthesis of Discrete-Event Super-visors with Safety Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

7.6. 13:10–13:30 An improvement on the Symbolic L* Algorithm . . . . . . . . . . . . . . . . . . . 36

8 CS3 Computer ScienceThursday 11:30–12:50 Room 2Chair: Dr. Sergio Chapa

8.1. 11:30–11:50 Projection-Based Coordination Control of Automated ManufacturingSystems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

8.2. 11:50–12:10 Providing SIP services support on Mobile networks . . . . . . . . . . . . . . 36

8.3. 12:10–12:30 Building an infrastructure for DNSSECbis in Mexico . . . . . . . . . . . . . . 37

8.4. 12:30–12:50 From Desktop Applications Towards Ajax Web Applications . . . . . . 37

9 EC1 Electronic CircuitsFriday 9:00–10:20 Room 2Chair: Dr. Richard Marquez

9.1. 9:00–9:20 Improved Direct Interface Circuit for Resistive Full- and Half-BridgeSensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9.2. 9:20–9:40 LOCOL: Leakage Reduction Tool Based on Transistor Reordering andLocal Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

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9.3. 9:40–10:00 A Real-time AAC/MP3-type Audio Codec on the 16-bit dsPIC Archi-tecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

9.4. 10:00–10:20 On the Generalized-Proportional-Integral Sliding mode Control ofthe “Boost-Boost” Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

10 EC2 Electronic CircuitsFriday 11:30–12:50 Room 2Chair: Dr. Yasuhiro Matsumoto

10.1. 11:30–11:50 Low Cost Ultrasonic Anemometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

10.2. 11:50–12:10 Design and Characterization of Low Phase Noise C-band SiGe HBTAmplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

10.3. 12:10–12:30 Phase Analysis of a Variable Gain Amplifier Controlled ThroughMatching Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

10.4. 12:30–12:50 Graphical Analysis of Transformed Feedback Bilinear ExpressionsApplied to Differential Active Phase Shifters Design . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

11 EP Electrical PowerThursday 9:00–11:00 Room 3Chair: Dr. David Elıas

11.1. 9:00–9:20 A New Algorithm for Load Balancing and Power Factor Correction inMulti-phase (Six-phase) Load Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11.2. 9:20–9:40 Steady-State Inductance Calculation of a Turbine Generator in theABC Reference Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11.3. 9:40–10:00 Estimation of Two-axis Synchronous Machine Parameters using Non-Deterministic Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11.4. 10:00–10:20 Real-Time Outage and Non-Outage Fault Location for Weakly MeshedDistribution Networks Using Directional and Non-Directional Fault Indicators . . . 41

11.5. 10:20–10:40 Observer Based Control for a Single Phase Active Rectifier . . . . . . 41

11.6. 10:40–11:00 Unknown Input Observer for Induction Motors:Experimental Evalu-ation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

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12 MEC1 Mechatronics and Automatic ControlWednesday 11:30–13:30 Room 1Chair: Dr. Martın Velasco

12.1. 11:30–11:50 On-line Algebraic Identification of Eccentricity in Active VibrationControl of Rotor-Bearing Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

12.2. 11:50–12:10 Geometric Design of Lead/Lag Compensators Meeting a Hinf Spec-ification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

12.3. 12:10–12:30 Decentralized Fuzzy Gain Scheduling Control for an Open IrrigationCanal Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

12.4. 12:30–12:50 Nonlinear Uncertain Servomechanism Tracking using an IntegralObserver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

12.5. 12:50–13:10 Dynamical Sliding Mode Control of a MagLev System with 3 DOFs:Experimental Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

12.6. 13:10–13:30 Computed-Torque Control of an Omnidirectional Mobile Robot . . . 43

13 MEC2 Mechatronics and Automatic ControlWednesday 15:00–17:00 Room 1Chair: Dr. Gerardo Silva

13.1. 15:00–15:20 Modeling and inventory regulation of dynamic supply chains throughordering policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

13.2. 15:20–15:40 On the Implementation of Control Laws for Finite Spectrum Assign-ment: the Multiple Delays Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

13.3. 15:40–16:00 On the Output Feedback Control of a Completely Unknown DC-Motor: Fast Algebraic Based Adaptation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

13.4. 16:00–16:20 Stable synchronization control for two ball and beam systems . . . . 44

13.5. 16:20–16:40 Finite Element Analysis and Design of a CubeSat Class PicosatelliteStructure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

13.6. 16:40–17:00 On the Analysis and Control of a flexible link Robot . . . . . . . . . . . . . . . 45

14 MEC3 Mechatronics and Automatic ControlThursday 9:00–11:00 Room 2Chair: Dr. Alejandro Rodrıguez

14.1. 9:00–9:20 Sliding PID Control for Trajectory Tracking of a 2 DOF Robot Manipu-lator: Simulations and Experiments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

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14.2. 9:20–9:40 On the GPI balancing control of an uncertain Jeffcot rotor model . . . . 45

14.3. 9:40–10:00 Estimation of the Precursor Power and Internal Reactivity in a NuclearReactor by a Neural Observer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

14.4. 10:00–10:20 Experimental Results on the Semiactive Sliding-Mode Control of theUnbalance Response in a Rotor-Bearing System Supported on MR Dampers . 46

14.5. 10:20–10:40 Fault diagnosis by means of sliding mode techniques . . . . . . . . . . . . 46

14.6. 10:40–11:00 Basic Small Fixed Wing Aircraft Sizing Optimizing . . . . . . . . . . . . . . . . 47

15 SEM1 Semiconductor MaterialsFriday 9:00–10:00 Room 3Chair: Dr. Ramon Pena

15.1. 9:00–9:20 Chemical composition and resistivity of sprayed CuInS2 thin films forsolar cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

15.2. 9:20–9:40 Crystallization of SbTe Phase Change Optical Films . . . . . . . . . . . . . . . . 48

15.3. 9:40–10:00 Origin of Stimulated Emission in Nanostructured Silicon p-n Junction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

16 SEM2 Semiconductor MaterialsFriday 11:30–12:30 Room 3Chair: Dr. Ramon Pena

16.1. 11:30–11:50 Study of the Crystallization Process of Cu2O Samples from Poly-crystalline Copper Plates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

16.2. 11:50–12:10 Cathodoluminescence of Silicon Rich Oxide with nitrogen incorpo-rated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

16.3. 12:10–12:30 Field Emission from Palladium Oxide Nanostructures Grown on SiSubstrates at Atmospheric Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

17 SSE1 Solid-State Electronics and VLSIWednesday 15:00–17:00 Room 3Chair: Dr. Alfredo Reyes

17.1. 15:00–15:20 Quantum mechanical modeling of charge trapping/detrapping phe-nomena in CMOS structures with high-k dielectric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

17.2. 15:20–15:40 Thin Film Bulk Acoustic Wave Resonators for their application inMicrowave Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

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17.3. 15:40–16:00 A Signal Probability Based Self-Controlling Leakage Reduction Tech-nique For CMOS Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

17.4. 16:00–16:20 Verilog-A Implementation of ICS Model for PD SOI Devices . . . . . . 50

17.5. 16:20–16:40 Adaptive Signal Identification Using LMS Filter with an Analog Mem-ory Cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

17.6. 16:40–17:00 Lowest Temperature at Thermoelectric Cooling . . . . . . . . . . . . . . . . . . . 51

18 SSE2 Solid-State Electronics and VLSIThursday 12:30–13:50 Room 3Chair: Dr. Felipe Gomez

18.1. 12:30–12:50 Comparative analysis between the STRATIX II (Altera) and VIRTEX4 (Xilinx) for implementing a LVDS bus receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

18.2. 12:50–13:10 An Experimental Comparison of Clock Distribution Networks forSystems on Chip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

18.3. 13:10–13:30 Analysis of the Threshold Voltage BSIM-Model for a Short ChannelPD-SOI DTMOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

18.4. 13:30–13:50 Model for a CMOS Bit-Level Product Cell . . . . . . . . . . . . . . . . . . . . . . . . . 52

19 SSE3 Solid-State Electronics and VLSIThursday 15:00–16:20 Room 3Chair: Dr. Alfredo Reyes

19.1. 15:00–15:20 Programmable Inverter Based on Neuron MOS Transistor . . . . . . . . 52

19.2. 15:20–15:40 On Force-Free Magnetic Fields with non-constant proportionalityfactor and their applications to High Temperature Superconductor . . . . . . . . . . . . . 52

19.3. 15:40–16:00 Study of the influence of the complex carbon-hydrogen in GaAs filmsgrown by MOCVD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

19.4. 16:00–16:20 Voltage Source Circuit Based on CMOS Floating-Gate Memory . . 53

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Courses

On September 3 and 4 2007, we are organizing tutorial courses to be offered in theinstalation of CINVESTAV in Mexico City. These courses are oriented to professionalsand students of electrical and electronics engineering or related areas. A maximum of50 persons can attend each course. The fee per course is

• $ 100.00 US Dollars for professional engineers

• $ 50.00 US Dollars for students

If You pay the cost of the conference, You will be able to take one from the coursesbelow mentioned

1. Synchronisation and ControlProf. Henk NijmeijerDepartment of Mechanical EngineeringEindhoven University of Technology

Date: Tuesday, September 3 (Duration: 5 hours )Schedule : 9:00 – 14:00Language : EnglishPlace : CINVESTAV - IPN, Mexico City.

Contents of the course:

• Part I Introduction

• Part II An observer view on synchronization

• Part III Controlled Synchronization

• Part IV (Partial) synchronization in diffusive networks

• Part V Communication and Synchronization

• Part VI Coordination of mechanical systems

The subject of the course has become very popular in the last decades. First, mostlyfrom a physics/biology viewpoint studies focussed on how synchronization arises incoupled systems. More recently, the subject also is receiving considerable attentionin the control community and also captures the study of coordination of large sets ofactuators.

From a control perspective synchronization has much in commom with the observerproblem, and this viewpoint will be extensively used during the course. Controlled syn-chronization combines feedback control with observer theory. As part of the course,

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students will work on a number of illustrative hand-out exercises.

2. Signals and Systems in Medical Diagnostics - current practices, trends, andneedsChristopher Druzgalski, Ph.DPAHCE (Pan American Health Care Exchanges), Los Alamitos, California.California State University , Long Beach , California

Date: Tuesday, September 4 (Duration: 5 hours )Schedule : 9:00 – 14:00Language : English / SpanishPlace : CINVESTAV - IPN, Mexico City.

Contents of the course:

Detection including continuous monitoring, transmission, and processing of biologi-cal signals for diagnostic applications represent one of the most challenging technolog-ical demands. In particular, demand for noninvasive or minimally invasive diagnosticprocedures and patient safety constraints set the design and utilization limits of elec-trodes, transducers, sensors, and instrumentation for medical applications. Further,the demand for expanded availability of technology based diagnostics and communi-cation at the point-of-care Specifically, the content focus includes a spectrum of di-agnostically available or desirable signals, possible solutions for enhanced detection,recording, signal transmission, various devices, design limitations and clinical appli-cations of particular instrumentation, as well as the technology of choice for selectedmedical applications. In particular, the topics include overview of Electrical Engineeringareas contributory to Medical Diagnostics, Survey of the Medical Engineering Industry,Review of Biological Signals, Recording of Physiological Signals, Electrodes, Sensorsand Transducers, Amplification of Signals, Patient Monitoring, Advances in MedicalInstrumentation, Safety and Reliability Concerns, Selected Standards and Practicesfor Medical Devices, and Future Trends. The discussions of fundamentals, advanceddesign, and practical applications encompass clinical, industrial, and research aspects.

3. Topicos Selectos de Compatibilidad Electromagnetica (only in Spanish)ETS-LindgrenMartes 4 de septiembre, 15:00–19:00 hrs.

• Parte 1: Medicion del ındice SAR “Specific absortion rate” producido por telefonoscelulares y otros dispositivos inalambricos

En este segmento del curso se abordara la teorıa detras de este tipo de medi-ciones, las normas vigentes de proteccion de radiaciones electromagneticas enseres humanos, los requerimientos de los sistemas de medicion de acuerdo a las

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normas del IEEE e IEC, ası como los retos que imponen las nuevas tecnologıasde dispositivos inalambricos para la medicion del SAR.

• Parte 2: Camaras anecoicas para prueba de antenas y medicion de patrones deradiacion

En esta segunda parte se examinaran los blindajes de RF para una camaraanecoica, el material absorbente para ondas electromagneticas, los diferentestipos de antenas, el software para medicion y representacion de los datos en tresdimensiones para obtener los patrones de radiacion, ası como los parametros amedir de las antenas y los procedimientos de prueba de acuerdo a las normasvigentes.

Round table session

Round Table: Different opportunities for the creation o new business companiesbased on advanced technological developmentsChair: Ricardo GomezThursday September 6, 200712:30-14:00

Mesa Redonda (in Spanish):Diferentes alternativas para la creacion de nuevos negocios basados en desar-rollos tecnologicos avanzadosChair: Ricardo GomezThursday September 6, 200712:30-14:00

Abstract:Several issues regarding the creation of new high technology companieswill be addressed in this round table. Some of the topics to be discussed are the patentprotection of new ideas, the importance of the marketing research, the business planas a guide for the company development, the function of the business incubator toincrease survival rates for innovative startup companies, the support options providedby government entities, financing and the actual entrepreneur experience with theirhigh technology products in Mexico.

Resumen: En esta mesa redonda se exploraran diferentes temas relacionados conla creacion de una nueva empresa a partir de un desarrollo tecnologico de vanguardia.Se abordaran entre otros topicos la proteccion intelectual de las invenciones, los es-tudios de mercado, la elaboracion de un plan de negocios, las ventajas de iniciar unnegocio a traves de una incubadora de empresas, los diferentes apoyos brindados porlas entidades gubernamentales, el financiamiento y la experiencia real de empresariosdedicados a la comercializacion de productos de alta tecnologıa.

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General Information

The Conference will be held in Mexico City at premises of CINVESTAV-IPN. Cinvestavis an important research Institute of Mexico; it was created on april 17, 1961.

CINVESTAV is located at the north of the city on Avenida Instituto Politecnico Na-cional No. 2508, corner with Calzada Ticoman, Col. San Pedro Zacatenco, DelegacionGustavo A. Madero, CP. 07360 Mexico, D.F., Mexico Mexico City ( Spanish : Ciudadde Mexico ) is the federal capital of and largest city in Mexico . It geographically spansthe north portion of the Distrito Federal (“D.F.”), although the metropolitan area extendsto the state of Mexico to the north of the Federal District, and to the state of Hidalgo.According to government statistics Mexico City is the second largest most populousconurbation in North America , and third in the world, after Tokyo , and New York ,with approximately 18 million people. Though its urban area is the third most populousin the world, what is officially known as Mexico City (under the limits of the FederalDistrict) is the most populous city in the world; that is, the greatest number of peoplegoverned by one mayor.

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Keynote Speakers

Prof. Henk NijmeijerEindhoven University of Technology, The NetherlandsConvergency and frequency reponse functions in nonlinear systems(abstract in p. 23)Wednesday, September 5, 2007; 10:00-11:00PLE1, Room 1

Prof. Manuel LagunaUniversity of Colorado at Boulder, U.S.A.The OptQuest Engine: A Commercial Application of Metaheuristic Optimization(abstract in p. 23)Thursday, September 6, 2007; 10:00-11:00PLE2, Room 1

Prof. Simon HaykinMcMaster University, CanadaCognitive Dynamic Systems(abstract in p. 24)Thursday, September 6, 2007. 11:30-12:30PLE3, Room 1

Prof. Esther Rodrıguez-VillegasImperial College, EnglandDesign Issues for Low-Power and Low-Voltage FGMOSFET Systems(abstract in p. 24)Friday, September 7, 2007. 10:00-11:00PLE4, Room 1

Prof. Christopher DruzgalskiCalifornia State University, U.S.A.Engineering human senses - biosensors(abstract in p. 25)Friday, September 7, 2007. 11:30-12:30PLE5, Room 1

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Plenary Conferences Abstracts

1 Convergency and frequency reponse functions in nonlinear sys-tems

Prof. Henk NijmeijerEindhoven University of Technology, The Netherlands

The purpose of the talk is twofold. First, it is argued that the notion of convergency,that stems from Russian literature in the 50-60s of the last century, is extremely usefulin the context of various nonlinear control synthesis problems. Convergency, which isclosely related to notions like input to state stability or incremental stability, requiresthat for any bounded input, the system possesses a unique limiting solution. Duringthe talk, convergency will be introduced, and its use in the regulator problem will bedemonstrated.

The second contribution of the talk focuses on frequency response functions forthe class of convergent nonlinear control systems. For this particular class, whichencompasses standard linear systems, one can thus discuss the performance of thesystem using ’linear’ Bode magnitude plots. An example featuring the approach willfinally be treated. The work reported is based on joint work with Alexey Pavlov (NTNU,Trondheim) and Nathan van de Wouw (TU/e, Eindhoven).

2 The OptQuest Engine: A Commercial Application of Metaheuris-tic Optimization

Prof. Manuel LagunaUniversity of Colorado at Boulder, U.S.A.

Many optimization problems in industry are too complex to be given tractable mathe-matical formulations. Nonlinearities, combinatorial relationships and uncertainty oftenrender challenging practical problems inaccessible to modeling except by resorting tomore comprehensive tools like computer simulation. Advances in the field of meta-heuristics have led to the creation of optimization engines that successfully guide aseries of complex evaluations with the goal of finding optimal values for the decisionvariables.

Our presentation first focuses on how scatter search has been adapted to createOptQuest. An overview of the OptQuest engine highlights this part of the presentation.We then show the functionality of OptQuest, both as part of other software systems(such as simulation packages) and as a stand-alone engine. Then, we provide severalexamples of real-world settings where OptQuest has been applied. Finally, we discussspecialized OptQuest versions that tackle particularly difficult problems.

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3 Cognitive Dynamic Systems

Prof. Simon HaykinMcMaster University, Canada

In this lecture I will cover :

3.1. Fundamental tools of Cognitive dynamic systems: neural computation, dynamicprogramming, and Kalman filtering.

3.2. Applications:

(a) Cognitive radio

(b) Cognitive radar

(c) Perceptual decoding of information in the auditory systems with emphasison Kalman-like filtering

4 Design Issues for Low-Power and Low-Voltage FGMOSFET Sys-tems

Prof. Esther Rodrıguez-VillegasImperial College, England

Motivated by consumer demand for smaller, more portable electronic devices thatoperate for longer on their existing battery packs, cutting edge electronic circuits needto be even more power efficient. For the circuit designer, this requires an understand-ing of the latest low voltage and low power techniques, one of the most promising ofwhich (mostly for biomedical applications) makes use of the floating gate MOS (FG-MOS) transistor. Whilst a conventional MOS transistor has only one input, the FGMOStransistors often have several. This fact, along with some other remarkable propertiesof this very interesting device, offers the designer many extra degrees of freedom thatcan significantly improve power efficiency. By using FGMOS transistor in the right way-establishing appropriate relationships between their inputs- it is possible to achieve de-sign tradeoffs that are not possible with conventional MOS devices. This is especiallytrue when power consumption and supply voltage are the main design constraints.

This talk will give an overview of how to use FGMOS and pseudo-FGMOS transistorswhen power reduction is the main aim. It will be shown how to use the FGMOS, todesign circuits that: a) can operate at power supply voltage levels which are well belowthe limits the particular technology is supposed to operate at, and b) consume lesspower than the minimum power a circuit designed with only MOS devices in the sametechnology with the same performance would require. The two main design targetswill be low voltage and low power. They will be achieved by pursuing four differentsubgoals:

4.1. Reduce the circuit complexity: As the circuitry gets simpler (fewer devices), lesscurrent branches are required, and therefore the power consumption decreases.

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This also has other benefits related to the frequency response, since the numberof internal nodes is smaller.

4.2. Simplify the signal processing: Complex functions are easier to implement usingFGMOS transistors. These will be used in nonlinear signal processing to reducethe voltage demands.

4.3. Shift the signal levels: The devices will be biased in the most appropriate oper-ating region for a wider range of input signals, by shifting the effective thresholdvoltages accordingly in the FGMOS transistors. This can be achieved without theneed of extra level shifters, although in some cases it can be detrimental as well.

4.4. Facilitate the tuning: Tuning becomes even more of an issue in a low voltagecontext, where variations are more critical since they can bias the devices outof their intended operating region. FGMOS transistors increase the number ofdegrees of freedom available to tune/program the circuits.

The talk will present the device as a powerful mathematic/electronic element, whichoffers three very important properties in the low voltage and low power context: Flex-ibility, Controllability, Tunability. Flexibility to implement both linear as well as complexnonlinear functions in a compact and easy fashion, this leading to the consequent sim-plification of the circuits. Controllability, since the effective threshold voltage of everysingle transistor can be controlled separately according to the operating range needs.Tunability, because it is a multiple input device and can be designed to be tuned just byadding extra inputs.

5 Engineering human senses - biosensors

Prof. Christopher DruzgalskiCalifornia State University, U.S.A.

A range of technological advances including areas of electronic circuits and powerelectronics, solid state physics, materials and bioacceptable packaging, allow the ex-pansion of diagnostic and therapeutic device/instrument design into human sensorymechanisms. Engineering efforts and advancement in the development of substitutesand/or supplemental systems primarily focused on the design of assistive devices forhuman hearing and vision, as they are perceived as the two most essential humansenses. However, the development of evaluation techniques and assistive devices as-sociated with the senses of human balance, touch, smell, and taste due to their intrica-cies face barriers of engineering design. These factors combined with complexities ofchronic chemosensory problems contribute to the fact that the Bionic Ear or CochlearProsthesis and the Visual Prosthesis designs receive much larger attention than theElectronic Nose or the e-Tongue. One can note that smell and taste are among themost difficult senses to quantify and reproduce.

The presentation will focus on selected topics including sensory related patientdsensor technologies.

26 2007 4th ICEEE

Abstract Book

1 BIO1 Bioengineering andMedical Electronics

1.1 Modeling Chromatic PupillaryResponses in Healthy People

Dolores Rodriguez, Ernesto SuasteCinvestav-IPN, Departamento de In-genierıa Electrica, Seccion de Bio-electronicaWe propose a model to determinate pupil-lary changes due to chromatic stimulus. Thepupillary diameters (PD) from 44 subjectswith normal vision of colors were measured.These PD were elicited by 26 different chro-matic stimuli (from 400 to 650 nm). The pro-posed model establishes the pupillary be-havior for different colors. To determinatethis model, we consider the characteristics ofthe subject (age and gender), stimulus (lu-minance and wavelength) as the diameterof their pupil (for white stimulus). With ourapproach the maximum coefficient of cor-relation obtained was of 1.0 in 90% of thecases analyzed (PD measured and calcu-lated). This proposed model is the first allover the world.

1.2 Epoch Parameterization by Ga-bor Atom Density in Experimen-tal Epilepsy

Arturo Sotelo Orozco, Enrique D. Gui-jarro Estelles, Manuel de Jesus GarcıaOrtega, Carlos E. Vazquez LopezTecnologico de Tijuana, Departamentode Ingenierıa Electrica y ElectronicaAn Electrocorticogram (ECoG), during anepilepsy episode can change dramaticallyfrom the normal state into a high amplitudelow frequency signal and suddenly return

to the normal sate. It is possible to iden-tify some stages in the epilepsy seizure, themost representative of them: basal, preictal,ictal and posictal. ECoG are highly non pe-riodical signals, so they are analyze with T-Falgorithms, in order to follow up its frequencyevolution through the seizure stages. Eachseizure stage has different frequency com-ponents and they show up at different time.Experimental epilepsy produce by kindlingmodel in rats is used; signals are recordedat cortex level. The ECoG is decompose bymeans of the Matching Pursuit algorithm intoGabor atoms, so the Gabor Atom Densitycould be a measure of the epoch, which tellus if an epoch from an ECoG belong to oneof the four seizure stages.

1.3 Assistant System For aid inthe Interlocking of IntramedullaryNails Used to Fix Long BonesFractured

Rigoberto Martinez, Arturo MinorCINVESTAVEach year are performed more than 492,000surgeries on the world for repair fractures inlong bones. The most used method to fix thisproblem is the closed intramedullary nailing,According as surgeons the most difficult taskis the interlocking of the nail. The presentwork proposes a new system for detectionof the intramedullary nail’s holes used in re-habilitation of fractures in long bones (tibiaand femur). The proposed method is basedon the use of permanent magnets and mag-netic sensors to locate the exact point wherethe bone must be drilled for the interlockingof the nail. The proposed system is aimingto diminish the great radiation doses to sur-geons and patients. The suggested device isportable and supplied by batteries to providea total autonomy, easy to use and great reli-

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ability.

2 BIO2 Bioengineering andMedical Electronics

2.1 A Hands Gesture System OfControl For An IntelligentWheelchair.

Ruben Posada Gomez, Luis Humbertosanchez Medel, Giner Alor Hernandez,Albino Martınez-Sibaja, Alberto AlfonsoAguilar-Laserre, Lorenzo Leija-Salas,Ruben Posada GomezDepartamento de Posgrado e Investi-gacion, Instituto Tecnologico de OrizabaWhen an unfortunate event affects the motorcapacity of a person, it is necessary to usedevices like wheelchairs that offer a means odisplacement for patients with motors prob-lems of the inferior members. Some patientsthat cannot manipulate the wheelchair withtheir arms due to a lack of force or psy-chomotor problems in the superior members,request electric wheelchairs, frequently ma-nipulated with joysticks; however the joystickmanipulation is even not practical and fre-quently it must be handle with the mouth.The present article presents the partial re-sults in the development of a wheelchair con-trolled by an intuitive interface, where theinstructions are given by hand gesture in-structions. The advances are presented inthe realization of the control software using aWebcam and some distances and presencesensors controlled by a PIC microcontrollerthat establishes the communication with aprogram developed in Labview.

2.2 Dispersion of Ratios of Ventric-ular Repolarization Intervals inNormal Subjects and Old My-ocardial Infarction Patients

Ismael Hugo Landeros-Guzman, GabrielVega-Martınez, Carlos Alvarado-Serrano, Juan Ramos-Castro, RamonPallas-ArenyCINVESTAV - IPNWe evaluate the dispersions in ratios of ven-tricular repolarization intervals, in order to de-termine whether they improve the separationbetween 10 normal subjects and 10 patientswith old myocardial infarction compared withdispersion of ventricular repolarization inter-vals. All the ratios dispersions were largerin OMI patients than in normal subjects andthe best separation between groups was ob-tained with the dispersions of ratios Tpe/JTand Tpe/QT. These novel indices could im-prove the identification of post-MI patientswith risk of malign ventricular arrhythmias.

2.3 Development of lead-free(Bi1/2Na1/2)BaTiO3 PiezoelectricCeramics for clinical Applica-tions

Roberto Rodriguez Ruiz, Agustın FloresCuautle, Ernesto Suaste GomezCINVESTAVThe present paper provide a method to ob-tain lead-free piezoelectric ceramics basedon bismuth sodium titanate (BNBT), as wellas the characterization of these, the elabo-ration consist from the dust mixture to thesinterized the pieces in a furnace, the BNBTsystems had been studied for his dielectricsand piezoelectric properties, the characteri-zation consists of determining the Curie tem-perature and resonance frequency. BNBTceramics present similar characteristics that

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PZT ceramics. Because of his high fre-cuency ofresonance they can be used inbiomedical applications, concretely in ultra-sound applications.

2.4 Pupillary response interpretationto white noise audible stimuli

Eduardo Martinez, Carlos OmarGonzalez Moran, Ma. DoloresRodrıguez, Ernesto Suaste GomezDepartment of Electrical Engineering,CINVESTAV-IPN, Mexico D.F., MexicoThis paper is focused to analyze the pupil-lary responses elicited by an audible stim-ulus (white noise). The stimulus durationswere 150 ms, 250 ms and 2 s. And each onewas applied twice, at 5 s and 15 s. The testwas performed on photopic conditions in 5men subjects from 25 years old to 29 yearsold.

2.5 Development of an EducationalSimulator and Graphical User In-terface for Diabetic Patients

Martin Hernandez-Ordonez, OmarMontano, Daniel U. Campos-Delgado,Elvia PalaciosUASLPThis paper presents an educational simula-tor and graphical user interface for type 1diabetes patients. The educational simulatoris conformed by three mathematical mod-els which describe the glucose-insulin dy-namics using a compartmental model, withadditional equations to reproduce aerobicexercise, gastric glucose absorption by thegut, and subcutaneous insulin absorption.Moreover, multiple daily doses and contin-uous insulin infusions can be simulated in

order to implement an intensive insulin ther-apy. The mathematical models, integrationmethods and insulin dosing strategies wereimplemented in Java programming language.As a result, the Java Educational DiabetesManagement Advisor (JEDMA) shows theinfluence of exercise periods, food intakes,and intensive insulin therapies on the glu-cose concentrations.

2.6 CT-Projections Hardware RawData Acquisition System for Im-age Reconstruction.

Alejandro Guzman De Leon, Jose Anto-nio Hernandez Peralta, Miguel CadenaMendez, David Rojas Montes de OcaUniversidad Autonoma Metropolitana-IztapalapaComputed Tomography (CT) is a very com-petitive medical imaging field, where world-wide manufactures are constantly improvingthe state of the art investing huge amountsof money to assure sales. Therefore, war-ranties and maintenance contracts avoidshospital and university research labs in LatinAmerica to have information access and toperform research experiments where CThardware and software are involved. Despitethis, university CT research labs are impor-tant to exist in order to create the “know-how”and to preserver the knowledge. This pa-per addresses important issues to create CTscanner experiments using donated equip-ment out of commercial companies supportthat not only take advantage of the hardware-software state of the art but in addition the ex-periments are used to improve the universalknowledge in the reconstruction algorithmsfield. One particular example is describedwhere CT raw data is acquired and then par-allel programming will be applied to obtainCT images at very low cost, improving qual-

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ity and reducing reconstruction time.

3 BIO3 Bioengineering andMedical Electronics

3.1 Design of a TranscutaneousElectrical Stimulator to Avoid thePostoperative Intestinal Effects

Luz Maria Alonso Valerdi, Arturo MinorMartinez, Carlos Escamilla WeiinmannCentro de Investigacion y de EstudiosAvanzados del IPNThe postoperative intestinal obstruction is anillness characterized by a partial or completeinterruption of the intestinal transit, due toadhesions that appear thus a surgical ab-dominal intervention in 88% of the cases.The 42% of these cases must undergo asurgical experience for the liberation of theadhesions. Unfortunately, whether the adhe-sions are excised, an inflammatory processwill begin; which is the base for the genesisof new adhesions, creating a vicious circlevery difficult to interrupt. Therefore, a differ-ent treatment for the intestinal postoperativeobstruction is proposed by establishing thishypothesis: “After an abdominal intervention;if an electrical stimulation therapy was ap-plied to return the motility of the small bowel,the adhesive growth would be prevented?”.Hence, a transcutaneous electrical stimulatorwas developed for recovering gastrointestinalmotor activity; with perspectives to find a newtreatment for the prevention of postoperativeeffects. The constructed electrical stimula-tor was tested on two male dogs, and theobtained results were successful. The con-traction of the small intestine was achievedby the applied electrical stimulation therapy.The outcomes are not completely successfuland the transcutaneous electrical stimulatorvalidation has not been accomplished; but

whether this idea was reliable, a new methodwould be found for the treatment of adhe-sions small bowel obstruction.

3.2 Electrocardiograph of TwelveDerivations, Low Current Con-sumption, Powered and Commu-nicated for USB

Juan Yarozvaldi Transito Trujillo, RaulMartinez-Memije, Oscar Infante VazquezSuperior School of Electric and Mechan-ical Engineering. Campus CulhuacanIPNIn this work we present the design and con-struction of a system for electrocardiogra-phy of twelve derivations, low power, sum-inistred by Universal Serial Bus (USB) port,at same time the EKG signal is monitoredin this port, the system consists on a circuitof three simultaneous channels that registerthe electric activity of the patient’s heart intwelve derivations by a 10 terminals cable.The initial amplification is made using theinstrumentation amplifier AD620, continueswith a filter of 0.05Hz in low frequencies and120Hz for high frequencies. Once carried outthis process the final amplification is made,the electric isolation is by magnetic type, theUSB communications are made using a com-mercial acquisition data system (ADS) modelUSB-1208FS that has a resolution of 12 Bits,the program and the control interface for thedata acquisition and display of signals com-ing from the USB port, was developed for theWindows XP operating system, and it waswritten in DELPHI 7.0 language, the systemis powered with 5V, demands 25mA, has aCMRR 97dB, input dynamic range of 4mV±5% and bandwidth of 0.05Hz at 120Hz,that which make it appropriate to clinical di-agnostic.

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3.3 On-line Simulation Tool for theDesign and Analysis of Lower-limb Prosthetic Devices

Alejandro Melendez Calderon, HectorCaltenco Arciniega, Strahinja Dosen, Je-sus Enrique Chong QueroAalborg UniversityThis paper presents a new and practical sim-ulation interface to design and analyze lower-limb prosthetic devices. The proposed toolsimulates the gait of a lower limb amputeeusing a desired prosthetic device. It allowsthe analysis of simple passive devices or thetesting of control algorithms for active pros-theses. The results presented in this papercorrespond to the use of this tool to test aFuzzy Controller specially designed for anactive transfemoral prosthesis. To validatethe tool, the simulation results are comparedwith “real-life” experiments.

4 COM1 Communication Sys-tems

4.1 An Efficient Architecture forDetection of Linear DispersionSpace-Time Codes Based on QRDecomposition

Joaquin Cortez Gonzalez, Miguel Baz-dresch, Deni Torres RomanCINVESTAV-GDLA new architecture for detection of LinearDispersion Space-Time Codes (LDSTBC)over Rayleigh fading channels is presented.The LDSTBC scheme consists of one Alam-outi space-time block code unit, plus twomore antennas operating as two layers ofV-BLAST in the transmitter. The LDSTBC re-ceiver can operate with three or more anten-

nas simultaneously. The proposed receiveris based on an Ordered Successive Interfer-ence Cancellation (OSIC) scheme and theQR decomposition, which leads to a suitablehardware implementation. It was designedfor the Zero-Forcing (ZF) criterion; reducedcomplexity is achieved by means of an ad-equate rearrangement of the channel matrixelements. The detection scheme proposedis evaluated and compared with other simi-lar recently reported proposals, assuming achannel without spatial correlation.

4.2 Digital Channel Modelingthrough Chaotic Generators

Mario Alberto Mijangos Alquisires, ValeriKontorovich, Mauricio Lara BarronCINVESTAV-IPNRecently, digital channel modeling throughchaotic generators has attracted strong inter-est at literature. Many of them refer to thegeneration of error detected time series fromwhere we can obtain channel’s statistics. Inthis paper we present a complete modelingof the error-gap distribution (EGD) statisticthat helps us to know how the errors are dis-tributed through the channel. Our principalaim was to generate error time series withstatistics properties similar to those that wecan obtain from a reference model, such asMarkov chains based models. Under theseconsiderations, we implemented these algo-rithms of error time series generation in aDigital Signal Processor (DSP) using as ref-erence three models of real digital channelsfrom literature.

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4.3 Distributed Power Control Algo-rithms in the Uplink of WirelessSystems

Francisco Javier Martinez-Lopez, DanielU. Campos-Delgado, Jose Martın Luna-RiveraUASLPIn this paper, the problem of power controlin wireless systems using a distributed ap-proach is analyzed. The uplink of a direct-sequence code-division multiple-accesscommunication (DS-CDMA) system is stud-ied in this work. The power control strate-gies are derived using classical design ap-proaches (PID and Dead-Beat). It is con-cluded that the uplink channel variations donot destroy the stability of the feedback struc-tures. However, the delays in the closed-loop paths can severely affect the stabilityand performance of the resulting feedbackschemes. As a result, the control laws haveto be selected according with the expectedtransmission delays in order to maximize theresulting performance. Simulation results arepresented to compare the control algorithmsusing a standard single-step power correc-tion approach.

4.4 Sampling Reconstruction Proce-dure for a Markovian GaussianNonstationary Process in thepresence of Jitter

Vladimir Kazakov, Jose Angel MedinaNational Polytechnic Institute of MexicoThe present work provides the conditionalmathematic expectation rule in order to an-alyze the sampling reconstruction procedureof a nonstationary process in the presenceof jitter. Beta function is studied as a rep-resentation of jitter distribution. The sam-pled process is Markovian Gaussian. The

error reconstruction function is investigatedfor nonstationary regime.

4.5 Frequency Offset Estimation andCompensation Using Superim-posed Training

Aldo G. Orozco Lugo, Mauricio Lara, En-rique Alameda Hernandez, Syed Moosvi,Desmond C. McLernonCINVESTAV-IPNWe propose in this paper some methodsto estimate and compensate for the harm-ful carrier frequency offset that could bepresent in pass-band wireless communica-tions. Although there are efficient methodsto estimate the frequency offset when train-ing sequences are employed, our methodexploits instead the presence of an im-plicit/superimposed training sequence. Im-plicit training schemes have been proposedbefore for the channel estimation task butthey all assume a data communication linkfree of any frequency offset and they all failin the case when this offset exists. It is there-fore mandatory to estimate and compensatefor this offset before proceeding to use thechannel estimation methods already avail-able in the open literature as a previous stepfor the ultimate goal of data recovery.

4.6 HAP-Based Monitoring of theEmissions Produced by Terres-trial Microwave Systems

Giselle Monserat Galvan-Tejada, VictorHugo Correa-CidCINVESTAV-IPNA new alternative in the context of radio mon-itoring is presented in this paper. The pro-posed approach is to use high altitude plat-

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forms (HAP) as monitoring stations providedtheir relatively large coverage and moderatepath loss. Emissions produced by point-to-point links of terrestrial microwave stationslocated in Mexico City are simulated in orderto illustrate the feasibility of HAP as monitor-ing station. Both free space and rain condi-tions are considered. Obtained results showthat a mobile HAP represents a very attrac-tive alternative for monitoring purposes, notonly due to the acceptable reception levels,but also for its potential implementation inpractice.

5 COM2 Communication Sys-tems

5.1 Improved carrier frequencyoffset estimation using data-dependent superimposed train-ing

Syed Mohsin Abbas Moosvi, D. C.McLernon, A. G. Orozco-Lugo, M. M.Lara, Enrique Alameda-HernandezThe School of Electronic and ElectricalEngineering, The University of LeedsWe address the problem of carrier frequencyoffset (CFO) estimation within the Data De-pendent Superimposed Training (DDST)framework for channel estimation. A CFOestimator was recently developed for DDST,which uses two different data dependenttraining sequences, one for CFO estimationand other for channel estimation. Here, wepropose a CFO estimation scheme whichcombines the estimates using both the data-dependent training sequences to improve theperformance. Finally, simulations are pre-sented that verify the theoretical develop-ments.

5.2 Analysis and Comparison of Op-timized Multi-Pump DistributedRaman Amplifier

Mohsen Katebi Jahromi, Farzin EmamiBoushehr Islamic Azad UniversityIn this paper, an optimized distributed multi-pump Raman amplifier is reviewed. Suchdevices are usually used in a WavelengthDivision Multiplexing (WDM) communicationsystem which pumped in bidirectional, coand counter cases and use a DispersionCompensated Fiber (DCF) as transmittingmedium. To describe the structure specifi-cations, the power analysis is applied. Wecompare the several cases, and it is foundthat the generated Amplified SpontaneousEmission (ASE) power in co-pumped caseis less than the other cases and noise fig-ure is improved for this kind of the structure.System stability is better for backward andbidirectional cases with respect to forwardpumping. Indeed, the signal-signal interac-tion has a very important effect in a Ramanamplifier system

5.3 160 Gb/s XOR Gate UsingBulk SOA Turbo-Switched Mach-Zehnder Interferometer

Ramon Gutierrez-CastrejonInstituto de Ingenierıa, Universidad Na-cional Autonoma de Mexico, UNAM.A modified Mach-Zehnder interferometer isproposed to carry out photonic XOR opera-tion between optical data streams. It consistsof the synthesis of a differential scheme andthe recently demonstrated turbo-switch. Sim-ulations utilizing a sophisticated bulk semi-conductor optical amplifier dynamical modelindicate practically error-free operation at160 Gb/s. A comparison of the proposedstructure with a state-of-the-art XOR gate

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shows outperformance of the former in termsof Q-factor, thus positioning the new deviceas a very attractive alternative design forlogic XOR functionality. Application as ultra-fast processing element on forthcoming opti-cal telecommunication networks is foreseen.

5.4 Distributed Power Control Per-formance in DS-CDMA Systemswith Adaptive Quantization

Francisco Javier Martinez-Lopez, DanielU. Campos-Delgado, J. Martin Luna-RiveraUASLPOne practical constraint imposed on closed-loop power control algorithms for a direct-sequence code-division multiple-accesscommunication (DS-CDMA) system is thelimited amount of feedback information. Thispaper proposes a closed-loop power controlscheme with adaptive quantization on thebasis of the number of power command bits.Adaptive quantization is used on the hypoth-esis that the quantization sensitivity can bedefined as a function of the standard devi-ation of the power command signal, whilemaintaining the feedback number of bits con-stant. Simulation results are presented toillustrate the performance of a distributedpower control (DPC) scheme with adaptivequantization, using the classic proportionalintegral derivative (PID) structure. Moreover,the performance of the DPC algorithm withfixed quantization is also presented and com-pared with the standard single-step powercorrection scheme.

5.5 Linear Dispersion Codes Gener-ation from Hybrid STBC-VBLASTArchitectures

Omar Humberto Longoria Gandara, Al-berto Emmanuel Sanchez Hernandez,Joaquın Cortez Gonzalez, Luis MiguelBazdresch Sierra, Ramon Parra MichelCINVESTAV-IPN, Unidad GuadalajaraHybrid MIMO Systems are defined as a com-bination of architectures designed to achieveboth multiplexing gain (such as VBLAST),and diversity gain, (such as STBC). In thesesystems the detection can be performed withan Ordered Successive Interference Cancel-lation (OSIC) based on SQRD algorithm, inwhich the layers with diversity are decodedfirst. In this paper we introduce a new wayto represent Hybrid Systems, in which thedetection process is carried out in a unifiedmanner for both spatial and diversity trans-mitted symbols, using an OSIC algorithm,but symbol by symbol, just as single VBLASTsystems performs. We show that within thisapproach, a Linear Dispersion (LD) codeshas been actually generated, that allowsthe use of LD theory to settle the capacityachieved by the Hybrid system. Thereforea bridge between Hybrid Systems and LDcodes has been established.

6 CS1 Computer Science

6.1 Multi-Class Support Vector Ma-chines for Large Data Sets viaMinimum Enclosing Ball Cluster-ing

Jair Cervantes, Xiaoou Li, Wen Yu, JavierBejaranoCinvestavSupport Vector Machines (SVM) for binaryclassification have been developed in a broad

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field of applications. But normal SVM algo-rithms are not suitable for classification oflarge data sets because of high training com-plexity. This paper introduces a novel two-stage SVM classification approach for largedata sets: minimum enclosing ball (MEB)clustering is introduced to select the trainingdata from the original data set for the firststage SVM, and a de-clustering technique isthen proposed to recover the training datafor the second stage SVM. Then we extendbinary SVM classification to case of multi-class. The novel two-stage multi-class SVMhas distinctive advantages on dealing withhuge data sets. Finally, we apply the pro-posed method on several benchmark prob-lems, experimental results demonstrate thatour approach have good classification accu-racy while the training is significantly fasterthan other SVM classifiers.

6.2 Qubits structure and coherencein a one-way quantum computer

Manuel Avila AokiCentro Universitario UAEM Valle deChalco UAEMexPresent days efforts for building up an op-erative quantum computer made of siliconsoon they will concrete. One of the mainchallenges to this task is to implement qubitcoherence in a practical way. We make em-phasis in some physical characteristics (suchas the structure) of the basic components(qubits) of a silicon one-way quantum com-puter which can be exploited in order to im-plement qubit coherence. Altogether withthis, we introduce form factors (accountingfor the qubit structure), and calculate timesof coherence. It is found that the nuclei stateslast longer than their electronic counterpart.However, this stability of nuclei qubits limitsthe speed at which the computer can carry

out instructions and process the information.

6.3 A method for designing CNNtemplates

Jose Antonio Medina Hernandez, Fe-lipe Gomez Castaneda, Jose AntonioMoreno CadenasCINVESTAVCellular neural networks (CNN) are very use-full for image processing tasks. One problemwith CNN networks is the lack of a program-ming method to realize a processing task.The cloning templates enterily specifies theprogramming of a CNN net. There are a lot ofcloning templates for several tasks, finded bymathematical analysis or heuristically. How-ever for some specific tasks is very difficultto find the correct templates. In this papera procedure for finding cloning templates forimage processing tasks is described, usinga gradient method. A set of CNN templatesobtained using the proposed procedure isshown.

7 CS2 Computer Science

7.1 Fragile Watermarking for ColorImage Authentication

Mariana Monzoy-Villuendas, Moi-ses Salinas-Rosales, Mariko Nakano-Miyatake, Hector Perez-MeanaESIME Culhuacan, Instituto PolitecnicoNacionalIn this paper, we describe a watermarkingsystem for digital color image authentication.This work is an extension of the Wang’s workwhich is based on a Hash function to con-struct fragile watermarking system. The sys-tem is able to detect any change in the image

2007 4th ICEEE 35

even though if it is minimal. Also the systemindicates the regions where suffered alter-ations. In this system, YCrCb color spaceis used instead of RGB color space. Water-mark extraction process can indicate pres-ence of any kind of alteration in the color im-age, using extracted watermark image. Com-puter simulation results show authenticationcapacity of the proposed system, using differ-ent image modification, such as JPEG com-pression, noise contamination, photomon-tage, etc. Many fragile watermarking systemare vulnerable to Vector quantization (VQ)attacks, however the proposed watermarkingsystem also show robustness of the systemagainst VQ attacks.

7.2 The Extreme Vertices Model inthe n-Dimensional Space (nD-EVM): A Novel RepresentationScheme for Orthogonal Poly-topes

Ricardo Perez-AguilaInstituto Universitario de Tecnologia yHumanidades (IUTH)We will describe the Extreme Vertices Modelin the n-Dimensional Space (nD-EVM) andthe way it represents nD Orthogonal Pseudo-Polytopes (nD-OPP’s) by considering only asubset of their vertices: the Extreme Ver-tices. In this work we present basic algo-rithms on the nD-EVM which provide usefulinformation about the polytopes being mod-eled through the scheme. Time Complexityand practical applications of the nD-EVM arealso commented.

7.3 Realtss: a real-time schedulersimulator

Arnoldo Diaz, Ruben Batista, OskardieCastroInstituto Tecnologico de MexicaliReal-time scheduling theory has shown animpressive evolution in the past few years.As a consecuence of the intensive researchdone in this area lot of new scheduling poli-cies had been proposed to date. Neverthe-less, just a few of such scheduling policiesare available in existing Real-Time OperatingSystems (RTOS). In this paper, we describeRealtss, an open source real-time schedul-ing simulator which is suited to simulate real-time scheduling algorithms without the needof implement them in a RTOS. Realtss isan invaluable teaching and researching toolsince existing and new real-time schedulingpolicies can be easily evaluated.

7.4 Reinforcement Learning and Dy-namic Planning Applied to Vir-tual Humans Animation

Moises Uc Cetina, Angel Rafael Ro-driguez Moreno, Felix Francisco RamosCorchadoCentro de Investigacion y de EstudiosAvanzados del I.P.N., Unidad Guadala-jaraWe present an approach using learning andplanning techniques to deal with the problemof animating virtual humans in 3D environ-ments. The main idea is to use learning toguide the initial behavior for animation, then,if an unexpected situation appears use thedynamic planning algorithm to go one stepmore to finish the animation. The advantageof this strategy is to improve the time requiredby algorithms to animate virtual creatures.Results obtained show how using this strat-

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egy improves the performance regarding justusing the planning algorithms.

7.5 A µ-Calculus Approach for theSynthesis of Discrete-Event Su-pervisors with Safety Specifica-tions

Jose Antonio Lopez Barreto, ArturoSanchez Carmona, Raul Ernesto Gon-zalez TorresCentro de Investigacion y Estudios Avan-zados del I.P.N., Unidad GuadalajaraIn this paper we present a generalizedmodel-checking-based approach for the syn-thesis of automata-based supervisors fordiscrete-event systems (DES). Expressive-ness of µ-calculus is exploited to constructfixpoint operators for supervisory synthesis.A novel Kripke structure is proposed thatsimplifies the synthesis of supervisors as amodel checking problem within the same ap-proach. An efficient synthesis algorithm ispresented maintaining the same computa-tional complexity of other known methods. Agraphical example is employed to show theadvantages of the proposed approach.

7.6 An improvement on the SymbolicL* Algorithm

Alejandro Aguilar Cornejo, Raul ErnestoGonzalez TorresCentro de Investigacion y Estudios Avan-zados del IPN, Unidad GuadalajaraIn this paper we present several improve-ments on the symbolic implementation ofAngluin’s L* algorithm for regular inferencein the context of the compositional verifica-tion of reactive systems. We present a newkind of symbolic structures to model such

systems, which we interpret as automata forL* suitability, as well as a more efficient pro-cedure for close the observational table.

8 CS3 Computer Science

8.1 Projection-Based CoordinationControl of Automated Manufac-turing Systems

Arturo Sanchez Carmona, Liz ErendiraLlamas Lopez, Raul Ernesto GonzalezTorresCentro de Investigacion y Estudios Avan-zados del I.P.N, Unidad GuadalajaraThis paper presents the design and imple-mentation of automata-based supervisors ofa hierarchical and modular coordination ar-chitecture for a prototype automated man-ufacturing system (AMS). Models for eachlayer are built using industrial standards. Se-mantic consistency between adjacent layersis maintained by including in the upper layertransitions modeling the lower layer oper-ational status. These transitions are usedas the projection alphabets. The modularityof the architecture is exploited to guaranteeglobal controllability.

8.2 Providing SIP services supporton Mobile networks

Javier Alexander Hurtado Guaca, Fran-cisco Orlando Martinez Pabon, Os-car Mauricio Caicedo Rendon, OctavioRamirez RojasUniversidad del CaucaMobile network operators aims are offer-ing new services to be competitive in thetelecommunications area. However, the mi-gration cost towards the 3G network is so

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high. This paper presents a proposal to offera Next Generation Services Platform basedon SIP. This solution is easy to implementand its cost is relatively low. Our solutiontakes into account the IMS service architec-ture specification proposed by the Third Gen-eration Partnership Project (3GPP) providingubiquitous characteristics for mobile users.In this way, our proposal becomes as a toolto allow an easy transition from 2.5 to 3rdgeneration networks.

8.3 Building an infrastructure forDNSSECbis in Mexico

Alberto Francisco Martinez Herrera, Ser-gio David Villarreal Reyes, Jorge CarlosMex Perera, Gustavo Lozano IbarraCentre for Electronics and Telecommuni-cations, Tecnologico de Monterrey, Cam-pus Monterrey.This paper describes the architecture de-veloped for DNSSECbis implementation inNIC Mexico. The main goal of this work isto create a secure domain. We propose tobuild an architecture to manage DNSSECbisprivate keys securely. The software tools de-veloped allows a zone administrator and theInternet Community to deploy DNSSECbisquickly and efficiently. One such tool checkswhether a secure domain is correctly con-figured. Additional tools to manage privateand public keys for DNSSECbis were cre-ated. The proposed architecture and toolshave been used for DNSSECbis deploymentunder test.mx. The results of this trial showsthat DNSSECbis adoption is feasible.

8.4 From Desktop Applications To-wards Ajax Web Applications

J. Sergio Zepeda, Sergio V. ChapaDepartment of Computer Science. CIN-VESTAVAjax is a set of different technologies thatwork together to create new and power-ful Web applications. Ajax is demonstrat-ing its usefulness in real world applications.The most important Internet companies as:Google, Yahoo, Amazon, Microsoft, are de-veloping rich Web applications based onAjax. Many developers do not know how touse these technologies to build Ajax Applica-tions. In this paper, we present an overviewabout Ajax. Here, we discuss the term Ajaxand the technologies used. Also, we showhow Ajax is working inside, and how the tech-nologies work together to achieve a rich be-havior.

9 EC1 Electronic Circuits

9.1 Improved Direct Interface Cir-cuit for Resistive Full- and Half-Bridge Sensors

Ernesto Sifuentes de la Hoya, Jaime Os-car Casas piedrafita, Ferran ReverterCubarsi, Ramon Pallas ArenyUniversitat Politecnica de Catalunya(UPC)Resistive bridge sensors can be directly con-nected to a microcontroller by using time-based measurement circuits that yield a digi-tal output proportional to the fractional resis-tance change. However, internal resistances(Rini) of microcontroller pins result in system-atic errors. We propose an improved mea-surement circuit and two time-based equa-tions to compensate for Rini. The proposedcircuit and equations have been tested on

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full- and half-bridge circuits. For both typesof bridge, the improved interface circuit andthe two novel algorithms reduce the maximalerror by a factor greater than two.

9.2 LOCOL: Leakage Reduction ToolBased on Transistor Reorderingand Local Stacking

Bassem Elkarablieh, Adrian Nunez-AldanaUniversity of Texas at AustinAs technology scales down, leakage is be-coming the most dominant factor of powerconsumption in VLSI circuits. Recently,many design strategies targeting leakagereduction have been published by industryand academia groups. However, the timingpenalty of leakage reduction techniques isconsiderable. We present LOCOL, a CADtool for reducing power while minimizing thelarge penalties in timing. LOCOL uses tran-sistor reordering in conjunction with localpath stacking to reduce the leakage of com-plex CMOS gates. Experiments show thatfor various complex gates, leakage was re-duced by an average factor of 12X, and thecritical path timing increased by an averageof 20%, which is feasible compared to 200%overhead imposed by present techniques.

9.3 A Real-time AAC/MP3-type AudioCodec on the 16-bit dsPIC Archi-tecture

Ishaan DalalThe Cooper Union for the Advancementof Science and ArtThis paper presents the design and imple-mentation of a psychoacoustic, MDCT-based

digital audio decoder and associated play-back system on Microchip’s 16-bit, fixed-point dsPIC microcontroller. Unlike common“MP3-player” projects that use dedicated de-coder chips, here one microcontroller han-dles everything from data transfer, signalprocessing and LCD display. The systemcan play back encoded 44.1 KHz stereo au-dio in real-time from a flash card. All codewas custom-written in assembly. Additionalmodifications to the decoder to make it workwith standards-compliant MP3 or AAC audioare in progress.

9.4 On the Generalized-Proportional-Integral Sliding mode Control ofthe “Boost-Boost” Converter

Adrian Franco-Gonzalez, Richard Mar-quez, Hebertt Sira-RamırezCINVESTAV-IPNThis paper presents a multi-variable DC-to-DC converter of the “Boost-Boost” type con-stituted by two cascaded “Boost” convertersin continuous conduction mode, each feed-ing an independent resistive load. A slid-ing mode feedback controller, based on theGeneralized Proportional Integral (GPI) ap-proach, is developed for the regulation task.The feedback control scheme uses only out-put capacitor voltage measurements, as wellas input signals represented by the switchpositions. In addition robustness of the feed-back scheme is tested by non-modelled sud-den load resistance variations in the last re-sistive load. Experimental results verify theo-retical predictions.

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10 EC2 Electronic Circuits

10.1 Low Cost Ultrasonic Anemome-ter

Miguel Perez del Valle, Antonio UrbanoCastelan, Yasuhiro MatsumotoCentro de Investigacion y de EstudiosAvanzados del IPNLow-cost ultrasonic transducers have beenemployed for wind speed and direction mea-surements. The system logic was designedbased on Freescale’s HCS12 microcontrollerwhich delivers data to a personal computer.A LabVIEW virtual instrument software hasbeen used for final data display and logging.

10.2 Design and Characterization ofLow Phase Noise C-band SiGeHBT Amplifier

Nicolas Shtin, Ruben Ortiz Loa,Jose Mauricio Lopez Romero, EugenProkhorovCINVESTAV Unidad QueretaroThis paper deals with the design and experi-mental characterization of C-band microwaveamplifier based on commercial SiGe hetero-junction bipolar transistor (HBT). In this de-sign an impedance-matching technique thatallows realization of the HBT amplifiers hav-ing a maximum gain within 4. . . 6 GHz fre-quency range is developed. As a result ofthis approach a low phase noise amplifierproviding a 13 dB gain at 4.6 GHz and about1 GHz bandwidth has been designed. Inorder to characterize a phase noise of thedesigned amplifier a phase noise measure-ment setup based on a carrier suppressiontechnique was developed. A measured am-plifier’s phase noise is proved to be lowerthan -160 dBc/Hz at 1 kHz Fourier frequency.

10.3 Phase Analysis of a Vari-able Gain Amplifier ControlledThrough Matching Networks

Martin Javier Martinez Silva, Marıa Su-sana Ruiz Palacios, Jose Luis RamosQuirarteUniversity of Guadalajara, CUCEIThe phase is an important characteristic forthe majority of communications circuits. Inthis paper a study of the effects in the phaseof a type of variable gain amplifier (VGA) ispresented. The VGA is controlled throughthe change in the reactance of the elementsin impedance matching networks. Two con-trol parameters are defined to change thegain and phase. Expressions are presentedto predict such variations. Design examplesof variable gain amplifiers are carried out andgraphics for the properties of gain and phaseare shown. Although control of these char-acteristics is not independent, the advantageis that it can be done by a single circuit. Itsapplication in beamforming networks for an-tenna arrays is discussed.

10.4 Graphical Analysis of Trans-formed Feedback Bilinear Ex-pressions Applied to Differen-tial Active Phase Shifters De-sign

Javier E Gonzalez Villarruel Javier, MarioLopez MarioITESM- CEMGraphical analysis has become a powerfultool to design advanced high frequency cir-cuits. By mapping complex expressions ona smith chart, complex functions can visu-ally be designed. This paper presents agraphical method applied to active high fre-quency phase shifters design. By mappingbilinear expressions resulting from an active

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device with a serial or parallel feedback, ac-tive phase shifters can be designed. For themethod proposed, first the expressions forthe bilinear transformed component are ob-tained from original active device S param-eters, then, a computer program performsthe mapping process and plots constant am-plitude and phase circles on a smith chartrepresenting the feedback component. Fi-nally by selecting the adequate circles thedifferential phase shifter can be designed.

11 EP Electrical Power

11.1 A New Algorithm for LoadBalancing and Power FactorCorrection in Multi-phase (Six-phase) Load Circuits

Zakir Husain, R.K. Singh, S.N. TiwariNational Institute of Technology Hamir-purMulti-phase loads, with phases more thanthree, especially in the form of inverter fedinduction motor drives suited to high powerand specialized applications, are receivinggrowing attention in the literature. This multi-phase source for such drive application maybe derived from transformer connection (3phase to 6 phase) or by DC link six-phase in-verters. These sources will face the problemof unbalance, harmonic distortion and poorpower factor operation. In view of these de-velopments, this paper deals with the supplyside load balancing and power factor correc-tion in such load circuits. The proposed com-pensation scheme uses the shunt currentsource compensation whose instantaneousvalues are determined by the instantaneoussymmetrical component theory. The com-pensation scheme developed in the paper istested for its validity on 6-phase (6-wire &7-wire) circuits through extensive simulations

for unbalanced loading and phase outages.The simulation results of the compensationtheory and the ideal compensator verify thecompensation method.

11.2 Steady-State Inductance Calcu-lation of a Turbine Generator inthe ABC Reference Frame

Rafael Escarela Perez, EduardoCampero Littlewood, Ana Lilia LaureanoCrucesUniversidad Autonoma MetropolitanaThe calculation of non-saturated inductancesfor a solid-rotor generator is performed usinganalytical formulae and finite-element com-putations. The inductance profiles are ob-tained in the ABC frame of reference. It isassumed that the machine is operating in thelinear region of the open-circuit characteris-tic. Finite-element simulations are more ac-curate than analytical approaches since theelectromagnetic phenomena is better rep-resented. On the other, hand, analyticalformulae is computationally less expensivebut accuracy is questionable since many ap-proximations are considered for their finalestablishment. Proper combination of bothtechniques gives a good trade-off betweenaccuracy and computational costs. Steady-state inductances are employed for examplein the determination of the machine opera-tion safe regions.

11.3 Estimation of Two-axis Syn-chronous Machine Parametersusing Non-Deterministic Tools

Rafael Escarela Perez, TadeuszNievierowicz, Eduardo Campero Little-wood, Jose Luis Hernandez Avila

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Universidad Autonoma MetropolitanaOptimization is employed in this work to ob-tain the two-axis parameters of a typicalsolid-rotor synchronous machine. SSFR datais used to set-up the identification problem,leading to a fitness function that must be min-imized. However, the function is plagued withlocal minima, making the parameter identifi-cation impossible with deterministic methods.Genetic Algorithms have become an impor-tant tool to deal with local minima and soft-ware codes are readily available. Determina-tion of the global/true minimum is not easythough since big computational resourcesare required even for relatively small prob-lems. Moreover, the final minimum may notbe found in spite of proper tuning of the Ge-netic Algorithm. Some tuning aspects areaddressed in this work.

11.4 Real-Time Outage and Non-Outage Fault Location forWeakly Meshed DistributionNetworks Using Directional andNon-Directional Fau

Izudin DzaficSiemens AG, Power Transmission andDistribution, Energy AutomationTraditional approaches use two different al-gorithms for outage and non-outage fault lo-cations. Both of them are based on classicalradial (tree) distribution networks. This pa-per describes algorithm that can be appliedto any kind of meshed network configura-tions using any available fault indicator type.The proposed algorithm is very suitable forextensions: including impedance based in-formation or processing trouble calls.

11.5 Observer Based Control for aSingle Phase Active Rectifier

Manuel Israel Flota BanuelosUniversidad Autonoma de San Luis Po-tosıThere are two control objectives in activerectifiers: DC regulation and power factorcorrection, however it is difficult to reach bothobjectives simultaneously. In this paper ispresented the use of an observer based con-trol for complete both control objectives. Aproporcional integral (PI) control is applied toregulate DC voltage and a hysteresis basedcontrol for improve the power factor. Experi-mental results on a 1kVA single phase activerectifier prototype are presented to verify thesystem’s behavior.

11.6 Unknown Input Observer forInduction Motors:ExperimentalEvaluation

Fabian Romero Torres, Marco GallegosLara, Ricardo Alvarez Salas, EdmundoGabriel Rocha CozatlUniversidad Autonoma de San Luis Po-tosıUnknown input observers (UIO) are able toestimate perfectly the state of a system, de-spite of completely unknown input pertur-bations. In this paper is presented the ex-perimental evaluation of an unknown inputobserver suitable for flux estimation for in-duction motors taking the load torque as un-known input. Experimental results on a semi-industrial setup are given.

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12 MEC1 Mechatronics andAutomatic Control

12.1 On-line Algebraic Identificationof Eccentricity in Active Vibra-tion Control of Rotor-bearingSystems

Andres Blanco Ortega, Francisco BeltranCarbajal, Gerardo Silva NavarroITESM, Campus Guadalajara Division deIngenierıa y ArquitecturaThis paper leads with the application of on-line algebraic identification for eccentricityestimation in a rotor-bearing system. An im-portant property of this algebraic identifica-tion is that the eccentricity identification isnot asymptotic but algebraic, in contrast tomost of the traditional identification methods,which generally suffer of poor speed perfor-mance. The algebraic identification is com-bined with an adaptive-like active vibrationcontrol scheme to reduce the amplitude re-sponse of the system while it passes throughof its first critical speed. It is considered thatone of the bearings can be automaticallymoved to control the effective rotor lengthand, as an immediate consequence, the ro-tor stiffness. Therefore, the rotor stiffness isconsidered as a control input of the system.Some numerical simulations are included toillustrate the dynamic performance of the al-gebraic identification and the active vibrationcontrol scheme, when the rotor is started andoperated over the first critical speed.

12.2 Geometric Design of Lead/LagCompensators Meeting a HinfSpecification

Salvador Saucedo Flores, Antulio Mor-gado Valle, Bernardo Altamirano Castille-jos

ESIME Zacatenco IPNThe problem of characterizing a classof second-order three-parameter compen-sators [including lead/lag compensators andproportional-integral-derivative (PID) con-trollers] satisfying given a closed-loop spec-ification. Design characterizations of similarform as in the recent work on PID control, arederived for a larger class of compensatorsusing simple geometric considerations. Thelinear fractional transformation is used to givethe transfer function the required shape. Ageneralization of the Hermite-Biehler Theo-rem is used.

12.3 Decentralized Fuzzy GainScheduling Control for an OpenIrrigation Canal Prototype

Ofelia Begovich, Evaristo Martinez, Vic-tor Ruiz CarmonaCINVESTAV-IPN, U. GuadalajaraA decentralized fuzzy gain scheduling controlis designed and tested in simulation on a mul-tipool open irrigation canal prototype. Themain objective of the controller is to regulatethe downstream level of each canal’s poolin spite of large inflow disturbances. Eachlocal controller, of the decentralized control,is a gain scheduling controller composed bya bank of three Linear Quadratic Gaussian(LQG) regulators switched by fuzzy logic.The adequate closed-loop performance ob-tained suggests the evaluation of the devel-oped scheme on field applications.

12.4 Nonlinear Uncertain Ser-vomechanism Tracking usingan Integral Observer

Ruben Garrido, Ernesto Flores Garcıa

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CINVESTAV-IPN, Departamento de Con-trol Automatico.The problem of tracking in a second ordernonlinear uncertain servo is considered. AProportional-Derivative (PD) controller withuncertainty and feedforward compensationis proposed. Such a controller employs es-timates obtained from an Integral Observer.Stability analysis in a Lyapunov sense forthe closed-loop system is performed. Exper-iments are carried out on a laboratory proto-type to validate the proposed approach.

12.5 Dynamical Sliding Mode Con-trol of a MagLev System with 3DOFs: Experimental Results

Ervin Jesus Alvarez Sanchez, Jaime Al-varez Gallegos, Rafael Castro LinaresCINVESTAVIn this paper we present the mathematicalmodel for a MagLev system with 3 DOFs.A dynamical sliding mode controller is pro-posed to regulate the levitation to a desiredposition and stabilize the rotational move-ments. Finally the mathematical model andthe controller are validated and evaluated bymeans of some experimental tests.

12.6 Computed-Torque Control of anOmnidirectional Mobile Robot

Jose Alejandro Vazquez Santacruz, Mar-tin Velasco VillaCINVESTAV-IPN Departamento de Inge-nierıa Electrica Seccion de MecatronicaThe path-tracking problem of a wheeled om-nidirectional mobile robot is addressed inthis work. Instead of the classical kinemat-ics model based control commonly consid-ered, the analysis of the problem is based on

the dynamic model of the vehicle. Borrowedfrom the rigid robot manipulator literature, thewell known computed torque control strategyis applied to the case of a mobile robot ofthe type (3,0). It is shown that the consid-ered strategy solves the problem assuringthe closed loop stability of the system whenthe state is available for measurement, allow-ing in this way the convergence of the track-ing errors. The performance of the trackingstrategy is evaluated by simulation, showingan acceptable performance.

13 MEC2 Mechatronics andAutomatic Control

13.1 Modeling and inventory regula-tion of dynamic supply chainsthrough ordering policies

Alejandro Rodriguez-Angeles, ArturoSanchez Carmona, Miguel Angel DuarteLoboCentro de Investigacion y Estudios Avan-zados del I.P.N. CinvestavA modeling approach based on traffic flowtheory, that involves orders and delays inmaterial flows for supply chains is presented.The resulting dynamic model is nonlinear andreflects basic phenomena of supply chainssuch as bullwhip effect due to delays on de-livering materials. For control purposes abounded PI control for inventory level regula-tion is considered. A stability analysis of theclosed loop system based on linearization isperformed. A simulation case study is pre-sented.

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13.2 On the Implementation of Con-trol Laws for Finite SpectrumAssignment: the Multiple De-lays Case

Daniel Melchor-Aguilar, Beatriz Tristan-TristanDivision de Matematicas Aplicadas Insti-tuto Potosino de Investigacion Cientıficay TecnologicaIn this note the stability of the internal dy-namics of control laws with distributed de-lays which assign a finite spectrum for delaysystems is addressed. These dynamics aredescribed by a special class of integral de-lay equations. We provide stability conditionsfor the integral delay equations that couldguarantee a safe implementation of the con-trol law by only using numerical quadraturemethods.

13.3 On the Output Feedback Con-trol of a Completely UnknownDC-Motor: Fast AlgebraicBased Adaptation.

Enrique Barrios Cruz, Hebertt SiraRamırez, Richard Marquez ContrerasCINVESTAV-ZacatencoAn algebraic parameter identificationmethod, developed for fast, on-line, com-putation of unknown linear system parame-ters, is here used for the fast adaptive outputfeedback control of a completely unknowndc motor, subject to constant perturbationload torques while solving a reference tra-jectory tracking task. An output feedbackcontroller of the Generalized Proportional In-tegral %(GPI) type, written in classical com-pensation network form, is proposed for theperturbed output trajectory tracking problem.The fast adaptation of system parametersis carried out, both, on the classical com-

pensating network parameters and on theconformation of the feed-forward control in-put signal. Experimental results validate theeffectiveness of the proposed approach.

13.4 Stable synchronization controlfor two ball and beam systems

Saul Jimenez, Wen YuCINVESTAV-IPNBall and beam system is one of the mostenduringly popular and important laboratorymodels for teaching control systems engi-neering. There are two main problems forball and beam control: 1) many laboratoriesuse simple controllers such as PD control,but theoretical analysis is based on linearmodels. 2) nonlinear controllers for ball andbeam system have good theory results, butthey are seldom used in real applicationsand almost nobody perform synchronizationcontrol for ball and beam systems. In this pa-per we modify the normal PD control in twoways for each ball and beam system: paralleland serial PD controllers for the regulationcase are given then we analyze the stabilityof these types of controllers for the synchro-nization of two ball and beam systems. Asimulation case is applied to test our theoryresults.

13.5 Finite Element Analysis and De-sign of a CubeSat Class Pi-cosatellite Structure

Cuauhtemoc Quiroz, Gerardo Silva,Hugo RodrıguezCINVESTAVThis paper focuses on the mechanical designof a low-cost picosatellite structure whichcomplies with the CubeSat program design

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specifications. Being the quasi-static loadsbigger than any other expected load, we con-sider failures due to column bending as adesign criteria. The overall design is val-idated using finite element methods. Thesatellite structure is treated as a combina-tion of beams and thin plate elements. Themechanical design process leads to threedifferent prototypes which comply with the di-mensional and structural requirements of theCubeSat program. The natural frequenciesof the prototypes are computed numericallythrough finite element based methods.

13.6 On the Analysis and Control ofa flexible link Robot

Juan Fernando Peza Solis, Gerardo SilvaNavarro, Rafael Castro LinaresCINVESTAV, IPNIn this article, a mathematical model for con-trolling the end tip position of a single flexiblelink robot arm is presented. The model is de-rived using a finite modal aproximation for thesolution of the Euler-Bernoulli beam equa-tion, with the clamped-free boundary con-ditions. The link is bounded to move on thehorizontal plane, so that the gravity effects onthe link are neglected. An appropiate outputfunction is chosen for properly controlling thesystem, called, the negative mode reflectedoutput. Passivity concepts are applied forproperly stabilizing the system allowing theapplication of a simple control approach forcontrolling the tip position. Simulations of thecontrolled system show the obtained results.

14 MEC3 Mechatronics andAutomatic Control

14.1 Sliding PID Control for Trajec-tory Tracking of a 2 DOF RobotManipulator: Simulations andExperiments

David D. Muro-Maldonado, Alejandro A.Rodrıguez-Angeles, Carlos Alberto C.A.Cruz-VillarCINVESTAVFor a class of robot arms, a proportionalderivative (PD) controller plus gravity com-pensation yields global asymptotic stabilityfor regulation tasks, and some proportionalintegral derivative (PID) controllers guaran-tee local convergence without gravity can-celation. However, these controllers cannotrender asymptotic stability for tracking tasks.In this paper, a simple sliding PID controllerfor tracking tasks that yields semiglobal sta-bility of all closed-loop signals with exponen-tial convergence of tracking errors is used.The designing, modeling and construction ofa robot manipulator is presented, following amultidisciplinary approach, everything basedon CAD/CAE/CAM tools. The prototype is a3 DOF planar robot manipulator arm pendu-lum type, totally designed in SolidWorks

14.2 On the GPI balancing control ofan uncertain Jeffcot rotor model

Hebertt Sira Ramirez, Gerardo SilvaNavarro, Francisco Beltran CarvajalCinvestav-IPNIn this article, we present an on-line piece-wise perturbation identification approach,based on algebraic parameter identificationmethods, for the output feedback control ofan unbalanced rotor model with unknowneccentricity parameters, unknown angular

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velocity and unknown mass. The eccentric-ity perturbation effects are regarded as un-known perturbations inputs that need to beapproximately identified, in a local and on-line fashion, in order to properly compensate,from the available set of external force con-trol inputs, for their periodic influence on thecenter of mass dynamics. An adaptive outputtrajectory tracking controller of the GPI typeis proposed for actively balancing towards adesired steady state the perturbed rotor dy-namics.

14.3 Estimation of the PrecursorPower and Internal Reactivity ina Nuclear Reactor by a NeuralObserver

J. Humberto Perez-Cruz, AlexanderPoznyakCINVESTAVThis paper presents the design of a nonlinearrobust observer for the estimation of the neu-tron precursor power and internal reactivityin a nuclear research reactor when only theinput and the neutron power are available formeasurement. The observer is based on adifferential neural network with internal andexternal layers. Besides, this observer hastwo correction terms: Luenberger one andsliding mode one. This last term is intendedto reduce the output external noise effect.The neural network is initially trained off-lineusing a very simplified third order nonlinearmodel of the nuclear reactor. The off-linetraining process is robust with respect to themodel employed. Thus, when this prelim-inary training has finished, the neural ob-server can work as a completely physicalmodel-free system and can carry out the on-line state estimation within a small margin oferror despite uncertainty and noise. The ef-ficiency of this technique with a guaranteed

bound for the averaged estimation error isillustrated by simulation.

14.4 Experimental Results on theSemiactive Sliding-Mode Con-trol of the Unbalance Responsein a Rotor-Bearing System Sup-ported on MR

Alvaro Cabrera Amado, Gerardo SilvaNavarroCINVESTAVThis paper deals with the problem ofsemiactive balancing control of a rotor-bearing system, where one journal bear-ings is supported on two radial Magneto-Rheological(MR)dampers. The mathemati-cal model of the rotor-bearing system resultsfrom a Jeffcott-like model and the dynam-ics associated to the MR dampers,whoserheological properties depend on the cur-rent inputs. For control purposes we use theChoi-Lee-Park polynomial model for the MRdampers, which is quite consistent with thenonlinear and complex hysteresis behaviorand also simplifies the physical implemen-tation on an experimental setup. The semi-active control scheme for the unbalance re-sponse of the rotor-bearing system is synthe-sized using sliding-mode control techniques.Some numerical and experimental resultsare included to illustrate the dynamic perfor-mance and robustness of the overall system.

14.5 Fault diagnosis by means ofsliding mode techniques

Jose Juan Rincon Pasaye, RafaelMartınez GuerraCentro de Investigacion y Estudios Avan-zados

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In this work, the fault diagnosis problem fornonlinear systems is treated, some resultsbased on a differential algebraic approachare used in order to determine fault diagnos-ability and one nonlinear observer using asliding mode technique is given for estimat-ing the faults, another nonlinear observer isalso treated with the purpose of comparingresults. An academic example is presentedand faults are estimated by each observer.Some numerical results are shown to illus-trate this methodology.

14.6 Basic Small Fixed Wing AircraftSizing Optimizing

Ezequiel Reyes Retana, Hugo RodriguezCortesCINVESTAV IPNIn this paper we address the endurance op-timization problem for an electric poweredfixed wing aircraft. An endurance equationin terms of the aircraft aerodynamics andthe electric power plant characteristics is ob-tained. The equation is optimized as a non-linear problem and handled using optimiza-tion constrained techniques to get the optimalvalues of the dimensions to build a basic air-craft sizing with maximum endurance.

15 SEM1 Semiconductor Ma-terials

15.1 Chemical composition and re-sistivity of sprayed CuInS2 thinfilms for solar cells

Juan Manuel Peza Tapia, Arturo MoralesAcevedo, Mauricio Ortega LopezCINVESTAV-IPN Mexico D.F. Depto. deIngenierıa Electrica-SEES

CuInS2 thin films were prepared on glasssubstrates using the spray pyrolysis tech-nique, using solutions in a wide range goingfrom poor in Cu to rich in Cu compositions.The films were prepared at 390C. The filmshave been sprayed using different ratios ofx = [Cu] / [In] in the precursor solution withthe objective of studying their compositional,structural, optical and electrical properties.The value of the Cu/In ratio in the precur-sor solution has been changed in the range0.66 – 1.5. SEM photographs show that thesurface of films prepared with low valuesof x were smooth, formed by small crystal-lites, while the films grown with higher valuesof x present rough surfaces constituted bylarger crystallites. The X-ray diffraction showthat films grown with low x values are com-posed by CuInS2, In6S7, In2S3 and CuIn5S8

phases, while the Cu-rich films present onlythe CuInS2 phase with the sphalerite struc-ture. The chemical composition has impor-tant influence in the grain size in the filmssince it is observed that the grain size in-creases as copper concentration in the filmsincreases. The optical band-gap of the Cu-poor films is larger than for Cu-rich films pos-sibly by quantum confinement of carries in-side the small crystals. The electrical resis-tivity for the Cu-poor films is high, around 106

Ω.cm, while the Cu-rich films present rela-tively small values, around 0.06 Ω.cm. Thisresult can also be explained as due to thedifference in grain size for the different layersgrown from different precursor solutions. Theabove results will allow us to select the mostappropriate conditions for preparing CuInS2thin films by spray pyrolysis for their use inhetero-junction solar cells.

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15.2 Crystallization of SbTe PhaseChange Optical Films

Eduardo Morales-Sanchez, EvgeneProkhorov, Jesus Gonzalez Hernandez,Martin Adelaido Hernandez Landaverde,Benjamin ChaoCICATA-IPN Unidad QueretaroThe aim of this work was to investigate thecrystallization properties and crystallizationtemperature in SbTe thin films, with differentcontent of Sb, using DSC, optical reflectionat 650 nm and XRD measurements. DSCstudies showed that crystallization tempera-ture of the films depend on the Sb content.XRD measurements have shown that filmswith low Sb contents (less that 73 at. %)directly crystallized in orthorhombic Sb2nTe3

and films with higher Sb contents first crys-tallized in rhombohedral Sb phase and atmore high temperature appear Sb2nTe3 sta-ble crystalline phase. Optical measurementsshowed a gradual increase of reflectivity withthe temperature depending on the Sb con-tent. The results of this research show thatit is possible to obtain mixtures with differentcrystallization temperatures, changing the Sbcontent in the SbTe alloys.

15.3 Origin of Stimulated Emissionin Nanostructured Silicon p-nJunction

Oleksandr Malik, Javier De la Hidalga-W., Alfonso Torres-J, Wilfrido Calleja-ANational Institute for Astrophysics, Op-tics, and Electronics (INAOE), Electron-ics DepartmentThe problem of laser operation based onband-to-band transitions in bulk crystallinesilicon is connected with its indirect energyband-gap structure. Nevertheless, Chen etal. [1] demonstrated experimentally for the

first time the presence of stimulated emis-sion from a silicon p-n diode. A peculiarityof those investigated diodes was the use ofmultiple nanostructured p-n junctions with anarea of about 10-11 cm2; they were fabri-cated on the silicon surface by the decom-position of boron silicate mixed with SiO2nanoparticles. The authors [1] suggestedthat the boron clusters diffuse into the siliconsubstrate to form p+-doped nanostructuredp+-n junctions after the decomposition of thiscompound. The aim of this work is to discussthe origin of the stimulated phonon-assistedband-to-band emission from a nanostruc-tured p-n junction. A more realistic modelbased on the formation of a nanostructuredboron-silicon p-n heterojunction is proposedto describe the origin of the stimulated emis-sion. Other important aspects of the stim-ulated emission such as the formation of aself-compressed electron-hole plasma at thesilicon surface, are also discussed.

16 SEM2 Semiconductor Ma-terials

16.1 Study of the Crystallization Pro-cess of Cu2O Samples fromPolycrystalline Copper Plates.

Horacio Solache Carranco, Ramon PenSierra, Gabriel Juarez DıazCINVESTAV IPNAn experimental study of the crystallizationprocess of Cu2O samples from polycrys-talline copper plates is presented. The crys-tallization process consists of two stages: Inthe first stage polycrystalline copper plateswere wholly oxidized at 1020 in air, in thesecond stage the Cu2O samples were crys-tallized through an annealing process at tem-peratures in the range of 1040-1070 , byseveral hours to promote the increase in size

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of the crystallites constituting the initial Cu2Osample. The Cu2O samples were character-ized by X-ray diffraction and photolumines-cence measurements. With the processingconditions used in the annealing process,Cu2O samples with single crystalline areasof more than 2 mm in diameter are observed.On the basis of the experimental results, amodel for the crystallization of Cu2O is pre-sented.

16.2 Cathodoluminescence of Sili-con Rich Oxide with nitrogen in-corporated

Rosa Elvia Lopez Estopier, MarianoAceves Mijares, Zhenrui Yu, Ciro FalconyGuajardoNational Institute for Astrophysics, Opticsand ElectronicsCathodoluminescence (CL) spectra for Sil-icon Rich Oxide (SRO) films with differentsilicon excess and nitrogen content are mea-sured at room temperature. The SRO wasdeposited by Low Pressure Chemical VaporDeposition (LPCVD) on Si substrates, and ni-trogen was introduced into SRO adding NH3to the reactive gases. The samples were di-vided in two parts, one part was annealed at1100 C. The nitrogen incorporation was ob-served by Fourier Transform Infrared Spec-troscopy (FTIR). All samples annealed at1100 C show CL, and only SRO with lowsilicon excess shows emission as deposited.The CL emission shows bands centered at∼460nm, ∼530nm and ∼720nm. The emis-sion of these bands depends on nitrogen andsilicon excess. The peak of the blue CL band(∼460nm) is related to twofold coordinatedsilicon center (=Si:). The band at ∼530nm isrelated with defect due to nitrogen incorpora-tion. The band at ∼720nm band is similar tothat obtained in PL.

16.3 Field Emission from PalladiumOxide Nanostructures Grownon Si Substrates at Atmo-spheric Pressure

Roberto Baca Arroyo, Claudia A LopezRodriguez, Miguel Galvan Arellano,Ramon Pena Sierra, Gabriel RomeroParedes RubioCINVESTAV IPNIn this work the field emission at atmosphericpressure from palladium oxide (PdO) nanos-tructures grown on Si (111) is demonstrated.The process for the growth of PdO nanos-tructures with average height between 9-45nm is reported. The structure used formeasuring de field emission current possesa diode configuration with a separation be-tween cathode and anode of 5.6um. Thecurrent-voltage (I-V) characteristics of thedeveloped structure were observed withvoltages between 100V operating at atmo-spheric pressure conditions. The base cur-rent of the developed structures without na-noemitters was of 1-4nA. The maximum cur-rent measured for PdO film nanoemitters wasof 100nA.

17 SSE1 Solid-State Electron-ics and VLSI

17.1 Quantum mechanical modelingof charge trapping/detrappingphenomena in CMOS structureswith high-k dielectric

K M Farhan Shahil FarhanBangladesh University of Engineeringand Technology

50 2007 4th ICEEE

A quantum mechanical model for the thresh-old voltage instability induced by charge trap-ping in the NMOS and PMOS structures withhigh-k gate dielectric stacks has been devel-oped. The model has been developed intro-ducing a new concept of charge detrappingthrough both gate-oxide and substrate-oxideinterfaces. A predominant role of that effecthas been observed with decreasing effectiveoxide thickness. The proposed model is ap-plicable for samples fabricated with differentannealing temperatures

17.2 Thin Film Bulk Acoustic WaveResonators for their applicationin Microwave Filters

Gerardo Francisco Perez Sanchez, Ar-turo Morales-Acevedo, Carlos Saavedra,Brad JacksonCINVESTAV del IPNWe have made Thin Film Bulk Acoustic Res-onators (FBAR) using ZnO as the piezoelec-tric material grown by sputtering. The per-formance of the devices was characterizedby measuring the frequency response in therange 2-5 GHz, finding the fundamental se-ries resonance frequency at 2.367 GHZ. Thevalues for the signal loss of insertion, qualityfactor (Qs) and the electromechanical coeffi-cient (keff2) were 2.198 dB, 20 y 1.15 %, re-spectively. In order to model and predict theresonator behavior we have used the modi-fied Butterworth Van-Dyke (MBVD) circuit.

17.3 A Signal Probability Based Self-Controlling Leakage ReductionTechnique For CMOS Circuits

Preetham Lakshmikanthan, AdrianNunez

Syracuse UniversityLeakage power loss is a major concern indeep-submicron technologies and efficientleakage control mechanisms are necessaryto maximize battery life. In this paper, a novelself-controlling leakage reduction techniquefor CMOS circuits is presented. The disad-vantages of having an external controller se-quencing the circuit operation like excessive“wakeup” delay and layout routing conges-tion for different control signals are avertedusing this self-controlling technique. A com-bination of high-Vt (high voltage threshold)and standard-Vt control transistors achievesvoltage balancing in the Pull-Up Network(PUN) and Pull-Down Network (PDN) paths,thereby cancelling the leakage effect in boththe paths. Experimental results on a vari-ety of circuits with 180 nm technology showsignificant leakage power savings using thistechnique when compared to the standardcircuit implementation, and also when com-pared to a well established self-controllingleakage reduction technique.

17.4 Verilog-A Implementation of ICSModel for PD SOI Devices

Esteban Contreras, Joaquin Alvarado,Antonio CerdeiraCINVESTAVWe present a Verilog-A implementation of aImproved Charge Sheet Model (ICSM) forPD SOI MOSFETs. This model is a physi-cal and continuous compact model for deep-submicron transistors focused in an accuracydescription of high order derivatives, in orderto obtain good approximation of the harmonicdistortion behavior. The implementation ofthe model, using Verilog-A language, allowsanalog circuit designer simulate their PD SOIdesign in SPICE circuit simulators, expectingreliable results

2007 4th ICEEE 51

17.5 Adaptive Signal IdentificationUsing LMS Filter with an AnalogMemory Cell

Jesus de la Cruz, Felipe Felipe, Jose An-tonio Moreno, Juan Carlos JuanCINVESTAV, D.F.This paper presents the performance of op-timal filtering; LMS with a nonvolatile ana-log memory cell fabricated through 1.2umCMOS process, for the adaptive identifica-tion signal problem, where transfer functionsare unknown and changing. The memorystores the weight in the filter as charge onthe floating gate of a transistor pMOS. Theupdate is linear, using a pulse density mod-ulation scheme by means of tunneling andinjection mechanisms. The LMS algorithm isimplemented digitally off chip, and it does notrequire the signal to be piecewise stationary,and requires no manual operation other thanselection of the step-size.

17.6 Lowest Temperature at Thermo-electric Cooling

Yuri Gurevich, Georgiy Logvinov, Os-car Angeles Fragoso, Jose Luis del RıoValdesDepartmento de Fısica, CINVESTAV-IPN.One-dimensional model of thermoelectricmodule is suggested, and the lowest temper-ature of thermoelectric cooling is obtained.It is supposed that cooling occurs due to theclassic Peltier’s effect, and the thermoelectricmodule operates in the mode when no exter-nal thermal load is applied.

18 SSE2 Solid-State Electron-ics and VLSI

18.1 Comparative analysis betweenthe STRATIX II (Altera) and VIR-TEX 4 (Xilinx) for implementinga LVDS bus receiver

Carlos Alberto Lujan Ramirez, FranciscoJose Mora Mas, Jorge Daniel MartınezPerez Martınez PerezInstitute Technologic de MeridaTechnological advances mean that increas-ingly faster speeds are required for datatransmission between devices, and so bet-ter tools and resources are required for con-necting devices. When various solutions areavailable for solving data transmission prob-lems, it is necessary to compare solutions todecide which is best for a given system. Thispaper compares two families of FPGAs bothsuitable for implementing an LVDS receiverde-serializer. The paper also describes thevarious tools that are available with each de-vice for improving performance and increas-ing data transmission rates.

18.2 An Experimental Comparison ofClock Distribution Networks forSystems on Chip

Monico Linares Aranda, Manuel SalimMaza, Daniel Pacheco BautistaInstituto Nacional de Astrofısica, Opticay ElectronicaIn this paper, an evaluation of experimentalresults from clock distribution networks fabri-cated for large systems on chip is presented.Typical 3.3V 0.35µm CMOS N-well AMIS pro-cess parameters were used for the chip fab-rication and analysis. It is shown that localnetworks represent an appropriate approachwhen used in system on a chip since these

52 2007 4th ICEEE

networks are comparable in performance toglobal nets but more robust under processvariations.

18.3 Analysis of the Threshold Volt-age BSIM-Model for a ShortChannel PD-SOI DTMOS

Abimael Jimenez Perez, Francisco JavierDe la Hidalga WadeInstituto Nacional de Astrofısica Optica yElectronica (INAOE)The threshold voltage is a fundamental pa-rameter necessary to predict the correct be-havior of circuits based on Dynamic Thresh-old MOSFETs. In this work, we analyzedthe short channel effects on this parameter.PISCES simulations of short and long chan-nel MOSFET’s based on a 0.2 µm PD-SOItechnology were used to investigate the va-lidity of the BSIMSOI model under substrateforward bias. The simulation results showedthat the dependence of the threshold volt-age on the substrate forward bias can dif-fer importantly from the BSIMSOI model forshort channel devices, but it could agree withBSIMSOI model for long channel devices.Under substrate forward bias, an improveddefinition for the minimum surface potentialmust be used in order to eliminate the dif-ferences between the BSIMSOI model andPISCES simulations for short channel de-vices.

18.4 Model for a CMOS Bit-LevelProduct Cell

Yesenia Eleonor Gonzalez-Navarro, Fe-lipe Gomez-Castaneda, Jose AntonioMoreno-Cadenas, Luis Martin Flores-Nava, Oliverio Arellano-Cardenas

CINVESTAV-IPNAn analysis method for a bit-level productcell used for vector-matrix multiplications ispresented. The cell is a combination of acharge injection binary multiplier and an ana-log accumulator. CID/CCD principles help tounderstand the cell function and MOS struc-ture equations are used to describe the celloperations.

19 SSE3 Solid-State Electron-ics and VLSI

19.1 Programmable Inverter Basedon Neuron MOS Transistor

Alejandro Medina Santiago, Mario Al-fredo Reyes Barranca, Rogelio FranciscoAntonioCINVESTAV-IPNThe present work presented the design ofprogrammable inverter used for design ofSoft-Hardware-Logic circuit that representsBoolean functions just configuring externalsignals fabrication in silicon CMOS technol-ogy based in floating gate transistor, alsopresent the simulation of SHL and character-istic the programmable inverter. The Simu-lations were done using PSpice, with level7model for MOS transistors, using the techno-logical parameters of the 1.2µm AMIS tech-nology.

19.2 On Force-Free Magnetic Fieldswith non-constant proportional-ity factor and their applicationsto High Temperature Supercon-ductor

Marco Pedro Ramirez Tachiquin, Sal-vador Cruz Bohorquez, Rodrigo Gomez

2007 4th ICEEE 53

MendozaEscuela de Ingenierıa de la UniversidadLa SalleWe review the state of the art of quaternionicsolutions for the Force-Free Magnetic Fieldequations: rot ~B = α~B, div ~B = 0, where α

is a non-constant proportionality factor and~B is the magnetic induction vector, appliedto the study of High Temperature Supercon-ductors. We introduce one method for rewrit-ing this system of equations in quaternionicform, and particularly, we review one technicfor obtaining new classes of solutions when α

is an arbitrary function of one spatial variableand one approach for obtaining solutions forone special case of α depending on threespatial variables.

19.3 Study of the influence of thecomplex carbon-hydrogen inGaAs films grown by MOCVD

Silvestre. Manrique-Moreno, GabrielRomero-Paredes, Miguel. Galvan-Arellano, Ramon Pena-SierraCINVESTAV.IPNThe results of the characterization of GaAsepitaxial films are presented. Emphasis ismade in the identification of the residual im-purities and the possible existence of C-Hcomplexes. For the growth of the GaAs epi-layers trimethylgallium was used as galliumprecursor and metallic arsenic was used asthe arsenic source. According to the behav-ior of the carrier concentration and mobilityas a function of growth conditions, the GaAs

epilayers result with intermediate values ofelectrical compensation. As the GaAs epi-layers were grown by MOCVD, the presenceof C-H complexes in the films is expectedand must be considered to explain electricalproperties of the GaAs films. The electricalcharacterization was done by the van derPauw method. FTIR spectroscopy was usedto identify the carbon complex in the GaAsfilms.

19.4 Voltage Source Circuit Basedon CMOS Floating-Gate Mem-ory

Jesus de la Cruz, Victor Ponce, FelipeGomez Castaneda Gomez, Jose Anto-nio Moreno Cadenas MorenoCINVESTAV, D.F.This paper present a new circuit designedto support high accuracy reference voltagesover a nearly full range of the power sup-ply. To achieve this, the circuit is designedto be efficient utilizing a CMOS floating gatememory fabricated in 1.2 µm CMOS process.The memory stores voltages as charge onthe floating gate of a pMOS transistor. Theoutput voltages of the circuit are easily pro-gramming by simply modifying the value ofthe floating gate through the tunnelling andinjection hot electrons mechanisms. Also,the circuit can drive a resistive load with theadvantage of reduced both silicon area anddissipated power on chip.

54 2007 4th ICEEE

Autor Index

Aceves Mijares, Mariano . . . . . . . . . . . . 49Aguilar Cornejo, Alejandro . . . . . . . . . . 36Aguilar-Laserre, Alberto Alfonso . . . . 27Alameda Hernandez, Enrique . . . . 31,32Alonso Valerdi, Luz Maria . . . . . . . . . . . 29Alor Hernandez, Giner . . . . . . . . . . . . . . 27Altamirano Castillejos, Bernardo . . . . 42Alvarado, Joaquin . . . . . . . . . . . . . . . . . . . 50Alvarado-Serrano, Carlos . . . . . . . . . . . 27Alvarez Gallegos, Jaime . . . . . . . . . . . . 43Alvarez Salas, Ricardo . . . . . . . . . . . . . . 41Alvarez Sanchez, Ervin Jesus . . . . . . . 43Angeles Fragoso, Oscar . . . . . . . . . . . . 51Arellano-Cardenas, Oliverio . . . . . . . . . 52Avila Aoki, Manuel . . . . . . . . . . . . . . . . . . 34Baca Arroyo, Roberto . . . . . . . . . . . . . . . 49Barrios Cruz, Enrique . . . . . . . . . . . . . . . 44Batista, Ruben . . . . . . . . . . . . . . . . . . . . . . 35Bazdresch Sierra, Luis Miguel . . . 30,33Begovich, Ofelia . . . . . . . . . . . . . . . . . . . . 42Bejarano, Javier . . . . . . . . . . . . . . . . . . . . 33Beltran Carbajal, Francisco . . . . . . 42,45Blanco Ortega, Andres . . . . . . . . . . . . . . 42Cabrera Amado, Alvaro . . . . . . . . . . . . . 46Cadena Mendez, Miguel . . . . . . . . . . . . 28Caicedo Rendon, Oscar Mauricio . . . 36Calleja-A, Wilfrido . . . . . . . . . . . . . . . . . . . 48Caltenco Arciniega, Hector . . . . . . . . . . 30Campero Littlewood, Eduardo . . . . 40,40Campos-Delgado, Daniel U. . . 31,28,33Casas piedrafita, Jaime Oscar . . . . . . 37Castro Linares, Rafael . . . . . . . . . . . 43,45Castro, Oskardie . . . . . . . . . . . . . . . . . . . . 35Cerdeira, Antonio . . . . . . . . . . . . . . . . . . . 50Cervantes, Jair . . . . . . . . . . . . . . . . . . . . . 33Chao, Benjamin . . . . . . . . . . . . . . . . . . . . . 48Chapa, Sergio V. . . . . . . . . . . . . . . . . . . . . 37Chong Quero, Jesus Enrique . . . . . . . 30Contreras, Esteban . . . . . . . . . . . . . . . . . 50Correa-Cid, Victor Hugo . . . . . . . . . . . . 31Cortez Gonzalez, Joaquın . . . . . . . 30,33Cruz Bohorquez, Salvador . . . . . . . . . . 52Cruz-Villar, Carlos Alberto . . . . . . . . . . 45

Dalal, Ishaan . . . . . . . . . . . . . . . . . . . . . . . 38De la Cruz, Jesus . . . . . . . . . . . . . . . . 51,53De la Hidalga Wade, Francisco Javier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48,52Del Rıo Valdes, Jose Luis . . . . . . . . . . . 51Diaz, Arnoldo . . . . . . . . . . . . . . . . . . . . . . . 35Dosen, Strahinja . . . . . . . . . . . . . . . . . . . . 30Duarte Lobo, Miguel Angel . . . . . . . . . . 43Dzafic, Izudin . . . . . . . . . . . . . . . . . . . . . . . 41Elkarablieh, Bassem . . . . . . . . . . . . . . . . 38Emami, Farzin . . . . . . . . . . . . . . . . . . . . . . 32Escamilla Weiinmann, Carlos . . . . . . . 29Escarela Perez, Rafael . . . . . . . . . . 40,40Falcony Guajardo, Ciro . . . . . . . . . . . . . . 49Farhan Shahil, K. M. . . . . . . . . . . . . . . . . 49Flores Cuautle, Agustın . . . . . . . . . . . . . 27Flores Garcıa, Ernesto . . . . . . . . . . . . . . 42Flores-Nava, Luis Martin . . . . . . . . . . . . 52Flota Banuelos, Manuel Israel . . . . . . . 41Francisco Antonio, Rogelio . . . . . . . . . . 52Franco-Gonzalez, Adrian . . . . . . . . . . . 38Gallegos Lara, Marco . . . . . . . . . . . . . . . 41Galvan-Arellano, Miguel. . . . . . . . . . 53,49Galvan-Tejada, Giselle Monserat . . . . 31Garcıa Ortega, Manuel de Jesus . . . . 26Garrido, Ruben . . . . . . . . . . . . . . . . . . . . . 42Gomez Castaneda, Felipe . 34,51,53,52Gomez Mendoza, Rodrigo . . . . . . . . . . 52Gonzalez Hernandez, Jesus . . . . . . . . 48Gonzalez Morın, Carlos Omar . . . . . . 28Gonzalez Torres, Raul Ernesto 36,36,36Gonzalez-Navarro, Yesenia Eleonor . 52Gonzalez Villarruel, Javier E . . . . . . . . 39Guijarro Estelles, Enrique D. . . . . . . . . 26Gurevich, Yuri . . . . . . . . . . . . . . . . . . . . . . . 51Gutierrez-Castrejon, Ramon . . . . . . . . 32Guzman De Leon, Alejandro . . . . . . . . 28Hernandez Avila, Jose Luis . . . . . . . . . 40Hernandez Landaverde, Martin Adelaido. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Hernandez Peralta, Jose Antonio . . . 28Hernandez-Ordonez, Martin . . . . . . . . 28Hurtado Guaca, Javier Alexander . . . 36Husain, Zakir . . . . . . . . . . . . . . . . . . . . . . . 40Infante Vazquez, Oscar . . . . . . . . . . . . . 29

2007 4th ICEEE 55

Jackson, Brad . . . . . . . . . . . . . . . . . . . . . . 50Jimenez Perez, Abimael . . . . . . . . . . . . 52Jimenez, Saul . . . . . . . . . . . . . . . . . . . . . . 44Juan, Juan Carlos . . . . . . . . . . . . . . . . . . 51Juarez Dıaz, Gabriel . . . . . . . . . . . . . . . . 48Katebi Jahromi, Mohsen . . . . . . . . . . . . 32Kazakov, Vladimir . . . . . . . . . . . . . . . . . . . 31Kontorovich, Valeri . . . . . . . . . . . . . . . . . . 30Lakshmikanthan, Preetham . . . . . . . . . 50Landeros-Guzman, Ismael Hugo . . . . 27Lara Barron, Mauricio . . . . . . . . . . . . 30,31Lara, M. M. . . . . . . . . . . . . . . . . . . . . . . . . . 32Laureano Cruces, Ana Lilia . . . . . . . . . 40Leija-Salas, Lorenzo . . . . . . . . . . . . . . . . 27Li, Xiaoou . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Linares Aranda, Monico . . . . . . . . . . . . . 51Llamas Lopez, Liz Erendira . . . . . . . . . 36Logvinov, Georgiy . . . . . . . . . . . . . . . . . . . 51Longoria Gandara, Omar Humberto . 33Lopez Barreto, Jose Antonio . . . . . . . . 36Lopez Estopier, Rosa Elvia . . . . . . . . . 49Lopez Rodriguez, Claudia A . . . . . . . . 49Lopez Romero, Jose Mauricio . . . . . . . 39Lozano Ibarra, Gustavo . . . . . . . . . . . . . 37Lujan Ramirez, Carlos Alberto . . . . . . 51Luna-Rivera, Jose Martın . . . . . . . . 31,33Malik, Oleksandr . . . . . . . . . . . . . . . . . . . . 48Manrique-Moreno, Silvestre. . . . . . . . . 53Mario, Mario Lopez . . . . . . . . . . . . . . . . . 39Marquez Contreras, Richard . . . . . . . . 44Marquez, Richard . . . . . . . . . . . . . . . . . . . 38Martinez, Eduardo . . . . . . . . . . . . . . . . . . 28Martinez, Evaristo . . . . . . . . . . . . . . . . . . 42Martınez Guerra, Rafael . . . . . . . . . . . . 46Martinez Herrera, Alberto Francisco . 37Martinez Pabon, Francisco Orlando . 36Martınez Perez, Jorge Daniel . . . . . . . 51Martinez, Rigoberto . . . . . . . . . . . . . . . . . 26Martinez Silva, Martin Javier . . . . . . . . 39Martinez-Lopez, Francisco Javier 31,33Martinez-Memije, Raul . . . . . . . . . . . . . . 29Martınez-Sibaja, Albino . . . . . . . . . . . . . 27Matsumoto, Yasuhiro . . . . . . . . . . . . . . . . 39McLernon, Desmond C. . . . . . . . . . . 31,32Medina Hernandez, Jose Antonio . . . 34

Medina, Jose Angel . . . . . . . . . . . . . . . . . 31Medina Santiago, Alejandro . . . . . . . . . 52Melchor-Aguilar, Daniel . . . . . . . . . . . . . 44Melendez Calderon, Alejandro . . . . . . 30Mex Perera, Jorge Carlos . . . . . . . . . . . 37Mijangos Alquisires, Mario Alberto . . 30Minor Martinez, Arturo . . . . . . . . . . . . . . 29Montano, Omar . . . . . . . . . . . . . . . . . . . . . 28Monzoy-Villuendas, Mariana . . . . . . . . 34Moosvi, Syed Mohsin Abbas . . . . . 32,31Mora Mas, Francisco Jose . . . . . . . . . . 51Morales Acevedo, Arturo . . . . . . . . . 47,50Morales-Sanchez, Eduardo . . . . . . . . . 48Moreno Cadenas, Jose Antonio . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 34,53,51,52Morgado Valle, Antulio . . . . . . . . . . . . . . 42Muro-Maldonado, David . . . . . . . . . . . . . 45Nakano-Miyatake, Mariko . . . . . . . . . . . 34Nievierowicz, Tadeusz . . . . . . . . . . . . . . 40Nunez-Aldana, Adrian . . . . . . . . . . . 38,50Orozco Lugo, Aldo G. . . . . . . . . . . . . 31,32Ortega Lopez, Mauricio . . . . . . . . . . . . . 47Ortiz Loa, Ruben . . . . . . . . . . . . . . . . . . . 39Pacheco Bautista, Daniel . . . . . . . . . . . 51Palacios, Elvia . . . . . . . . . . . . . . . . . . . . . . 28Pallas Areny, Ramon . . . . . . . . . . . . . 37,27Paredes Rubio, Gabriel Romero . . . . 49Parra Michel, Ramon . . . . . . . . . . . . . . . 33Pena Sierra, Ramon . . . . . . . . . . 48,49,53Perez Sanchez, Gerardo Francisco . 50Perez del Valle, Miguel . . . . . . . . . . . . . . 39Perez-Aguila, Ricardo . . . . . . . . . . . . . . . 35Perez-Cruz, J. Humberto . . . . . . . . . . . . 46Perez-Meana, Hector . . . . . . . . . . . . . . . 34Peza Solis, Juan Fernando . . . . . . . . . . 45Peza Tapia, Juan Manuel . . . . . . . . . . . 47Ponce, Victor . . . . . . . . . . . . . . . . . . . . . . . 53Posada Gomez, Ruben . . . . . . . . . . . . . 27Poznyak, Alexander . . . . . . . . . . . . . . . . . 46Prokhorov, Eugen . . . . . . . . . . . . . . . . . . . 39Prokhorov, Evgene . . . . . . . . . . . . . . . . . . 48Quiroz, Cuauhtemoc . . . . . . . . . . . . . . . . 44Ramirez Rojas, Octavio . . . . . . . . . . . . . 36Ramirez Tachiquin, Marco Pedro . . . . 52Ramos Corchado, Felix Francisco . . . 35

56 2007 4th ICEEE

Ramos Quirarte, Jose Luis . . . . . . . . . . 39Ramos-Castro, Juan . . . . . . . . . . . . . . . . 27Reverter Cubarsi, Ferran . . . . . . . . . . . . 37Reyes Barranca, Mario Alfredo . . . . . . 52Reyes Retana, Ezequiel . . . . . . . . . . . . 47Rincon Pasaye, Jose Juan . . . . . . . . . . 46Rocha Cozatl, Edmundo Gabriel . . . . 41Rodriguez Cortes, Hugo . . . . . . . . . . . . 47Rodriguez, Dolores . . . . . . . . . . . . . . . . . 26Rodrıguez, Hugo . . . . . . . . . . . . . . . . . . . 44Rodrıguez, Ma. Dolores . . . . . . . . . . . . . 28Rodriguez Moreno, Angel Rafael . . . . 35Rodriguez Ruiz, Roberto . . . . . . . . . . . . 27Rodriguez-Angeles, Alejandro . . . 43,45Rojas Montes de Oca, David . . . . . . . . 28Romero Torres, Fabian . . . . . . . . . . . . . . 41Romero-Paredes, Gabriel . . . . . . . . . . . 53Ruiz Carmona, Victor . . . . . . . . . . . . . . . 42Ruiz Palacios, Marıa Susana . . . . . . . . 39Saavedra, Carlos . . . . . . . . . . . . . . . . . . . 50Salim Maza, Manuel . . . . . . . . . . . . . . . . 51Salinas-Rosales, Moises . . . . . . . . . . . . 34Sanchez Carmona, Arturo . . . . 36,43,36Sanchez Hernandez, Alberto Emmanuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Sanchez Medel, Luis Humberto . . . . . 27

Saucedo Flores, Salvador . . . . . . . . . . . 42Shtin, Nicolas . . . . . . . . . . . . . . . . . . . . . . . 39Sifuentes de la Hoya, Ernesto . . . . . . . 37Silva Navarro, Gerardo . 45,44,45,46,42Singh, R.K. . . . . . . . . . . . . . . . . . . . . . . . . . 40Sira Ramırez, Hebertt . . . . . . . . 44,45,38Solache Carranco, Horacio . . . . . . . . . . 48Sotelo Orozco, Arturo . . . . . . . . . . . . . . . 26Suaste Gomez, Ernesto . . . . . . 26,27,28Tiwari, S.N. . . . . . . . . . . . . . . . . . . . . . . . . . 40Torres Roman, Deni . . . . . . . . . . . . . . . . 30Torres-J, Alfonso . . . . . . . . . . . . . . . . . . . . 48Transito Trujillo, Juan Yarozvaldi . . . . . 29Tristan-Tristan, Beatriz . . . . . . . . . . . . . . 44Uc Cetina, Moises . . . . . . . . . . . . . . . . . . 35Urbano Castelan, Antonio . . . . . . . . . . . 39Vazquez Lopez, Carlos E. . . . . . . . . . . 26Vazquez Santacruz, Jose Alejandro . 43Vega-Martınez, Gabriel . . . . . . . . . . . . . 27Velasco Villa, Martin . . . . . . . . . . . . . . . . 43Villarreal Reyes, Sergio David . . . . . . . 37Yu, Wen . . . . . . . . . . . . . . . . . . . . . . . . . 33,44Yu, Zhenrui . . . . . . . . . . . . . . . . . . . . . . . . . 49Zepeda, J. Sergio . . . . . . . . . . . . . . . . . . . 37