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Single-Antenna In-Band Full-Duplex Wireless Communication by Means of Reflected Power (ReflectFX)

February 16, 2021 at 3:00 pm

Prof.  Besma Smida, Ph.D.

Department of Electrical and Computer Engineering

University of Illinois Chicago


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Abstract: One key limit to spectrum utilization efficiency involves the current practice of half-duplex communication, in which a node cannot transmit and receive on the same frequency at the same time. Some recent studies have provided experimental evidence and methodologies for full-duplex communication. To date, however, all full-duplex demonstrations have been predicated on the principle that the transmitter and the receiver must generate their own radio-carrier waves independently, which in practice results in a high level of self-interference at both nodes. The objective of this project is to create reliable full-duplex wireless networks by means of reflected power. This project will pursue backscatter modulation, where electromagnetic waves are modulated and reflected by the same antenna that receives them. Within this framework, the end-user receives a signal free of self-interference. This research offers a new paradigm for two-way wireless networks: rather than avoiding self-interference as in half-duplex — or combating self-interference as in full-duplex — nodes will re-use the received interfering radio-carrier waves to transfer information. The results of this analysis will advance the knowledge of antenna scattering for a wide range of applications.

BIO: Dr. Besma Smida is an Associate Professor of electrical and computer engineering with the University of Illinois at Chicago. After completing her appointment as a Post-Doctoral Researcher and later a Lecturer at Harvard University, she became an Assistant Professor of electrical and computer engineering with Purdue University Northwest. She received the M.Sc. and Ph.D. degrees from the University of Quebec (INRS), Montreal, QC, Canada. She was a Research Engineer with the Technology Evolution and Standards Group of Microcell, Inc., (now Rogers Wireless), Montreal. She took part in wireless normalization committees (3GPP, T1P1). She has served as the Chair for IEEE Women in Engineering, Chicago Section, from 2011 to 2013, and has been the Chair of IEEE Communication Chapter, Chicago Section, since 2019. She currently serves as Editor for the IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, Editor of the IEEE Open Journal of the Communications Society, and a Guest Editor Sensors Open Access Journal.  Previously she served as an Associate Editor for the IEEE Communication Letters, and a Guest Editor for special issues of the IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS.

She is a Communication Society Distinguished Lecturer for 2021-2022. She was awarded the INSIGHT into Diversity Magazine’s 2015 “100 Inspiring Women in STEM”. She received the Academic Gold Medal of the Governor General of Canada in 2007 and the NSF CAREER award in 2015. Her research focuses on In-band Full-Duplex systems and applications, backscatter modulation, IoT, and two-way communication networks.


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