Resource Allocation and Rate Gains in Single-Channel and Multi-Channel Full-Duplex Systems

Speaker: Jelena Marašević
Affiliation: Ph.D. Candidate - Columbia University

Abstract: Full-duplex communication — simultaneous transmission and reception on the same frequency channel — has the potential to substantially increase the throughput in wireless networks. Since self-interference cannot always be cancelled to the extent where it can be deemed negligible, it affects the rate improvement that can be achieved from using full-duplex. To evaluate the achievable rate improvements, we model the remaining self-interference based on a small form-factor (e.g., a smartphone) full-duplex receiver, and demonstrate the accuracy of the model by measurements. We analyze the achievable rate improvements in different use scenarios. For systems with multiple frequency channels (e.g., OFDM), we design power allocation algorithms that maximize the sum of the uplink and downlink rates over frequency channels. We also consider the problem of determining the achievable rate region of full-duplex links and develop algorithms that in practice provide near-optimal solutions. Overall, the results provide a quantification of the achievable rate gains as a function of signal-to-noise ratios and (self-)interference-to-noise-ratios and are essential building blocks for future full-duplex MAC layer protocols. The talk is based on an ACM SIGMETRICS’15 paper (with J. Zhou, H.  Krishnaswamy, Y. Zhong, and G. Zussman) and an ACM MobiHoc’16 paper (with G. Zussman).

Biography: Jelena Marašević is a Ph.D. student at Columbia University. Her research focuses on optimization and algorithms, with applications in wireless networks. She received her B.Sc. degree from University of Belgrade, School of Electrical Engineering, in 2011, and her M.S. degree in electrical engineering from Columbia University in 2012. Jelena is a co-winner of the 2015 Qualcomm Innovation Fellowship. She is also a recipient of the M.S. Award of Excellence and the Jacob Millman Prize for Excellence in Teaching Assistance from Columbia University. She was selected as a participant in the 2015 MIT EECS Rising Stars Workshop.

For more information, contact Prof. Danijela Cabric (danijela@ee.ucla.edu)

Date/Time:
Date(s) - Jun 01, 2016
11:00 am - 12:00 pm

Location:
E-IV Maxwell Room #57-124
420 Westwood Plaza - 5th Flr. , Los Angeles CA 90095