8/14/2019 UWB Research Activities in Singapore
1/27
Page 1
UWB R&D Activities inSingapore
Prof Lye Kin MunDeputy Executive Director (Industry)
Institute for Infocomm Research
IDA UWB Seminar 24 May 2004
8/14/2019 UWB Research Activities in Singapore
2/27
Page 2
Outline IDAs UWB Programme
I2Rs Activities
A*STAR Thematic Strategic ResearchProgramme
Private Sector
Cellonics Inc.
Conclusions
8/14/2019 UWB Research Activities in Singapore
3/27
Page 3
Infocomm Development Authority
Announced UWB Programme
on 25 Feb 2003
Set up UWB Friendly Zone inScience Park II
Conducting test, measurements &experiments in UWBFZ on interference
Participation in PULSERS (regulatory issues)
Local Convenor for A*STARs Thematic StrategicResearch programme
8/14/2019 UWB Research Activities in Singapore
4/27Page 4
I2R Goal pushing UWB technology frontier
Range
Data Rate
I2R UWB tec hno lo g y fro ntie r
Current UWB te chnology frontie r Current UWB technology frontier
I2R UWB technology frontier
8/14/2019 UWB Research Activities in Singapore
5/27Page 5
I2R Our technologies: deliver an UWB access point .
UWBaccess point
SpaceTime Codes +Spatial Mux:
Lower terminal complexityand longer transmission
range, given sametransmission power and
bandwidth efficiency
DigitalDigital BasebandBasebandBeamformingBeamforming ::
Longer transmissionLonger transmissionrange, even in nonrange, even in non --
LOSLOS multipathmultipath
environmentenvironmentSingle Reader estimatingSingle Reader estimating
Direction + TimeDirection + TimeOf Arrival:Of Arrival:
Simpler, more convenientSimpler, more convenient
location positioninglocation positioningoperationoperation
8/14/2019 UWB Research Activities in Singapore
6/27Page 6
I2R IEEE Standardisation Activities
Submitted UWB Alt-PHY proposal to IEEE 802.15.3a High RateWPAN
Joined subsequently as author member of Multi-Band OFDMAlliance(http://www.multibandofdm.org/ )
to unify existing UWB technologies to form the best possible
solution with co-existence and interoperability for IEEE 802.15.3aHR-WPAN Alt-PHY proposals
Active participation Study Group in IEEE 802.15.4a Low Rate
WPANCurrently performing measurement andmodelling in indoor office environment
Up to 30m range
http://www.multibandofdm.org/http://www.multibandofdm.org/http://www.multibandofdm.org/8/14/2019 UWB Research Activities in Singapore
7/27Page 7
I2R IEEE Standardisation Activities
8/14/2019 UWB Research Activities in Singapore
8/27Page 8
I2R MBOA Technical Group Activities
8/14/2019 UWB Research Activities in Singapore
9/27Page 9
I2R Internal Core - High Rate UWB project
Objectives To demonstrate wireless
transmission of multimedia contentdownload / video streaming over extended range (2x over standardrange performance)
IP generated will be compliant toMBOA PHY specification v1.0
MBOA MAC specification v0.6or later version
MBOA MAC-PHY interfacespecification v0.7 or later version
FPGA demo in Q1/2005
Engineering expertise
- OFDM technology- Transceiver algorithms- IC design- Hardware prototyping- Medium Access Control- Firmware implementation
8/14/2019 UWB Research Activities in Singapore
10/27Page 10
I2R Internal Core - UWB High Rate RF Transceiver
Demonstrated in April 2003, an Ultrawideband(UWB) wireless linkthat is capable of transmitting and receiving data at 500Mbps, at arange of 4m with BER better than 10E-6 and conforming to theemission limits stipulated by FCC .
8/14/2019 UWB Research Activities in Singapore
11/27
Page 11
I2R Internal Core - UWB antennas
x
z
Slot Ground
32mils RO4003
Strip
Slot
Ground
Feed line
x
y
32mm
21mm
L1
L2Wf
Wf
Wf
Wf1
L3
I2R has strong expertise in small antenna designs.In particular, several UWB antennae have beendeveloped and we were invited to give talks inIEEE conferences/workshops
One of I2Rs antenna on PCB
8/14/2019 UWB Research Activities in Singapore
12/27
Page 12
I2R Internal Core - UWB localisation system
Project Features:- Position location with cm range of accuracy
- Low data rate
- Low power low cost
- Short range, multi-hop based co-operative localization
8/14/2019 UWB Research Activities in Singapore
13/27
Page 13
I2R Low-rate, low-power UWB
WHISPER project- TechnoBridge, a joint collaboration with TRLabs (Canada)
System Requirementslow power consumptionlow data rateCoexist with other narrowband and UWB wireless devicesCapable of high precision ranging
8/14/2019 UWB Research Activities in Singapore
14/27
Page 14
I2R Low-rate UWB - System design
For detailed information see: -
F Chin, W J Zhi and C C Ko, System Performance of IEE 802.15.4 Low Rate Wireless PAN using UWB asAlternate-PHY Layer ,PIMRC2003F Chin, W J Zhi and C C Ko, System Performance of UWB based Low Rate Wireless PAN ,Asilomar 2003
Bit-to-symConvertor
Code PosModulation
UWB analog modulator &
2-PPM pulse generator
3.1 GHz 10.6 GHz0.5 GHz
Transmitter
LNA
Baseband
chip
(orthog.
signal
detection,
mapping &
bit sequence
processing)
frequency
quad
mixer
LPF
BW = 500MHz
I
Q
Peak
Detector &
Sampler
LO
LPF
ADC
ADC
Receiver
Peak
Detector &
Sampler
FILTER
IEEE 802.15.4 Low Rate Wireless PAN using UWBas Alternate-PHY Layer
Reuse 802.15.4 standard PHY Layer codingscheme code position modulation (CPM)
2-PPM pulse transmission is used instead of Offset QPSK
Multiband approach is used only a 500 MHzband is used
Simple peak detector is used in receiver
8/14/2019 UWB Research Activities in Singapore
15/27
Page 15
Low-rate UWB Band plan & Bit rateI2R
A modified 2-level CPM codingscheme (CPM + CPM offerslonger code length per bit) is
proposed to extend range atlower data rateMultiband approach is used only a 500 MHz band within
3.1 10.6 GHz is used
8/14/2019 UWB Research Activities in Singapore
16/27
Page 16
I2R Low-rate UWB Range performance (simulation)
For 10% Packet error rate (128-bit packet size), range performance for 1-level CPM and2-level CPM coding scheme are ~ 5m and ~ 15m respectivelyIEEE 802.15.3a UWB Channel Model is used
8/14/2019 UWB Research Activities in Singapore
17/27
Page 17
A*STAR Thematic Strategic Research ProgrammeUWB+pervasive computing
The threefold objective of this workshop was to: Ascertain the interest and research development levels and
capabilities of the local research community in UWB and PervasiveComputing Identify focus areas where there are critical mass of relevantexpertise and experience Determine whether these critical mass areas can meld together in acompelling application framework to exploit the potential synergies ofUWB and Pervasive Computing.
Organisations involved :
IDA, I2
R, NUS (ECE), NTU (EEE, SCE), IME
8/14/2019 UWB Research Activities in Singapore
18/27
Page 18
Relevant Research Areas Identified
UWB technology elements :Ultra-wideband antennas, MIMO antenna systems, propagation models,PHY/MAC design, and interference mitigation techniques.
UWB system implementations :Single band/multi-band receiver and transmitter architecture, CMOS, SiGedesign, advanced packaging techniques, high rate/low rate design trade-offs.
Protocols and Networking :Dynamic service discovery, protocol/domain handover, mobile ad-hocnetworks, mobile quality of service, pervasive middleware, powerControl.
Novel applications of pervasive computing enabledby UWB technology .E.g., body area networking, location and context aware computing.
8/14/2019 UWB Research Activities in Singapore
19/27
Page 19
Private Sector R&D
Many MNCs and SMEs with R&D facilities inSingapore are interested or working in thefollowing areas:
Wireless USB Replacement technology(MBOA)Position location and Ranging
Chipset designMilitary applications
8/14/2019 UWB Research Activities in Singapore
20/27
Page 20
Cellonics UWB
Biological Cell ModelArvanitaki (1939)
Cell fast wave response
fast wave
slow wave
8/14/2019 UWB Research Activities in Singapore
21/27
Page 21
The Cellonics TM Technique
Slow Wave
Fast WaveCellonics TM ElementInput
Output
8/14/2019 UWB Research Activities in Singapore
22/27
Page 22
An Exampleinput waveform
Cellonics TM Circuit
+
-
L
Vin
Tunnel
Diode
V
i
i
Voutput waveformTunnel Diode
I-V Characteristic
8/14/2019 UWB Research Activities in Singapore
23/27
Page 23
Cellonics TM Element Features
INCREDIBLY SIMPLE INCREDIBLY SIMPLE
SUPER SMALL SIZE SUPER SMALL SIZE
CONSUME VERY LITTLE POWERCONSUME VERY LITTLE POWER
LOW COST LOW COST
CAN BE MASSIVELY PARALLELCAN BE MASSIVELY PARALLEL
WIDESPREAD APPLICATIONS WIDESPREAD APPLICATIONS
Op-Amp
Inductor, Tunnel Diode
8/14/2019 UWB Research Activities in Singapore
24/27
Page 24
Comparison of Receiver ArchitectureConventionalConventional BluetoothBluetooth transceivertransceiver
LNA Cellonics
Receiver
Decision
device
+
-
L
Vin
TunnelDiode
V
i
Envelope
detector
TX
LNA CellonicsTransmitter
ONE symbol/pulseONE symbol/pulse
VERY simpleVERY simple
Does not requireDoes not require psecpsec ..resolution at theresolution at thereceiverreceiver
Frequency translationFrequency translationoptionoption+
-
L
Vin
Tunnel
Diode
V
i
OR TX
RX
UWB transceiver architectureUWB transceiver architecture
ONE symbol/1000 pulses
Complex, require integrationin psec resolution
Source: Intel Technology Journal
8/14/2019 UWB Research Activities in Singapore
25/27
Page 25
Cellonics UWB Technology
Benefits of using Cellonics frequency translation method at thetransmitter:
Provide option to occupy only certain desired frequencyspectrum, no energy wasted during transmission
Minimize interference with other devices via frequency hoppingwithin 3-10 GHz band by changing the centre frequency of UWBsignal
8/14/2019 UWB Research Activities in Singapore
26/27
Page 26
Conventional Correlator vs Cellonics
ConventionalConventional CorrelatorCorrelator CellonicsCellonics
Matching signal
Incoming signal
frame
Require to match incomingsignal
Precise timing (in the order of pulse width, usually hundredsof picosecond)
Require thousand of pulses to
decode 1 symbol
No matching signal required
Timing is in the order of framerate(up to the system designer)
Require only ONE pulse todecode 1 symbol
V
I
N-Curve
8/14/2019 UWB Research Activities in Singapore
27/27
Page 27
Conclusion
UWB has been identified by National Agencies to
be of strategic importance; viz. IDA and A*STAR.
Public sector research is carried out byUniversities and Research Institutes in wide rangeof areas.
Private sector research is relatively smaller but picking up.