IEEE Winnipeg Section


IEEE Communications Society Seminar – August 10, 2018


IEEE COMMUNICATIONS SOCIETY, Winnipeg Section, and Department of Electrical and Computer Engineering, University of Manitoba, are hosting the following technical seminar.

You are welcome to attend.


TITLE: Novel Chirp Spread Spectrum Methods for Low-Power Wide-Area Networks


SPEAKER: Dr. Ha Nguyen

DATE:   Friday, 10 August 2018

TIME:     10:00 am

PLACE: E1-270, EITC, University of Manitoba, Fort Garry Campus

ORGANIZER: IEEE Communications Society (Winnipeg Section)




Low-power wide-area networks (LPWANs) have recently emerged as a promising communication technology for the Internet of Things (IoT). LPWANs are designed to achieve large coverage ranges, extend battery lifetimes of end-devices, and reduce the operational cost of traditional cellular networks. By exploiting the unlicensed, industrial, scientific, and medical (ISM) frequency band and transmitting small packets at low data rates, these networks can be operated with very low reception sensitivities. The long-range and low-power properties of LPWANs make these networks an interesting candidate for smart sensing technology in civil infrastructures as well as in industrial applications.

This talk first introduces the chirp spread spectrum (CSS) technique used in low-power wide-area networks known as LoRa. Then it presents novel approaches to modulate and demodulate LoRa signals with high implementation efficiency, flexibility and excellent performance. The last part of the talk explains a method to exploit the phase information of CSS signals to encode extra information bits, leading to throughput improvement of the conventional CSS system.



Dr. Ha Nguyen received the B.Sc. degree from Hanoi University of Technology (HUT), Vietnam, in 1995, the M.Sc. degree from the Asian Institute of Technology (AIT), Thailand, in 1997, and the Ph.D. degree from the University of Manitoba in 2001, all in electrical engineering. He joined the Department of Electrical and Computer Engineering, University of Saskatchewan in 2001, and became a Professor in 2007. He currently holds the position of NSERC/Cisco Industrial Research Chair in Low-Power Wireless Access for Sensor Networks. His research interests fall into broad areas of Communication Theory, Wireless Communications, and Statistical Signal Processing.


For additional information, please contact:


Jun Cai, Ph.D., P.Eng.

Chair, IEEE Communications Society Chapter, IEEE Winnipeg Section


Department of Electrical and Computer Engineering

University of Manitoba

Winnipeg, MB Canada R3T 5V6


Telephone: 1-204-4746419


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