Internship Report Taiwan Education Experience Program (TEEP)-Internship with Taiwan Hi-Tech ICT

I. Basic InformationLast Name: Chaudhary Given Name: Mukesh

Nationality: Indian Email: m.chaudhary@iitg.ernet.in

Home University: Indian Institute of Technology,Guwahati Department / Institute:

Electronics and Communication Engineering

Host University: ■ National Tsing Hua University

□ Tatung University

Department / Institute: Electrical Engineering

Internship Duration: 2015/05/18 - 2015/07/12 Host Professor: Jen-Ming Wu

Internship Subject: 1). A hands-on introduction to NI-Universal Software Radio Peripheral and NI- Labview.

2). Orthogonal Frequency Division Multiplexing (OFDM) Transceiver design.

II. Professional Achievements

Goal: To learn how to use Labview software to program USRP and then implement half duplex wireless communication using OFDM scheme.

Acknowledgements:Achieving this goal would not have been possible if i did not have a support of many individuals. Therefore I would like to extend my sincere gratitude to all of them. First of all I am thankful to Professor Jen-Ming Wu for providing necessary guidance concerning project, its implementation and helping me whenever I needed. I am also grateful to the colleagues from EE111 Lab for their kind co-operation and encouragement which helped me while working on this project.

Introduction:The Universal Software Radio Processor or USRP is very popular with radio enthusiasts because it can be reprogrammed to perform non-standard radio signal sampling and/or processing. I learnt various basic programming functions like case structures, for-loop, while-loop, arrays, bundle etc. Then, I got familiarized with NI-USRP while working on Labview’s instruments input/output

function.

Technical Approach and analysis:

I started with writing simple Labview codes implementing basic arithmetic operations and displayed the result using suitable indicator. Next, I learnt how to write Labview code for QAM modulation and demodulation and further I used this code to simulate the transmission of a string and demodulation of string over additive white Gaussian noise (AWGN).

Then I learnt about how to communicate using OFDM scheme. All involved steps are given below in the block diagram and next to it is the Labview implementation of all the steps.

Conclusion:Randomly generated bits were 4-QAM modulated at carrier frequency of 915MHz using one USRP and this signal is received by another USRP over air. Given below image shows two baseband waveforms. On the left is the waveform of transmitted signal and the right one is the received baseband waveform. Intensity of the received waveform decreases as the gain of the transmitter as well as receiver decreases or the distance between transmitter-receiver pair increases.

III.Cultural Experiences and Food in Taiwan

When I first departed for the Taiwan, I had no idea what to expect, as I had little time to do research about life and people in Taiwan in general. Fortunately, as I began my journey in Taiwan, the experience has been delightful and fun. The people are surprisingly welcoming and always ready to lend a hand when you need one, the food offers an adventure in itself, I tried many food here and some of them are really delicious when I compare to my country`s favorite dishes and the places to travel are diverse.

Once I visited Shifen waterfall and there I found hundreds of sky lanterns light over the waterfall. I came to know that these lanterns are decorated with wishes and images relating to the owner.

One good friend of mine told me that Heibai Wuchang are two deities. People travel around their

city with two deities and they hope to get peace in return.

Foods that I loved in Taiwan, are shown below. I have heard that Taiwan is very much famous

for pine apple cakes and I purchased it from nearby mart and it was really delicious. There is a

lot more dishes left to try before I leave Taiwan.

IV. Comments and Suggestions for TEEPI highly appreciate this program. It gave me opportunity to interact with Taiwan`s people, know

their culture and make new friends. There is one suggestion that Indian students are used to

highly spiced dishes and few of them are pure vegetarian, it would be great if they are given

dormitory with kitchen.

Signature of Host Professor: Date: