ECE Seminar - Should interference be treated as noise?
The Electrical and Computer Engineering department will be hosting a seminar featuring Daniela Tuninetti from the Electrical and Computer Engineering Department at University of Illinois at Chicago. The topic of the seminar will be Should interference be treated as noise?
Abstract
Recently there has been a lot of work in trying to characterize when it is optimal to treat interference as noise (TIN) in Gaussian multi-user interference channels. The optimality of such a scheme is very appealing in practice because TIN is arguably the simplest possible communication strategy. Past work has focused on the use of point-to-point optimal iid Gaussian codebooks and has established sufficient conditions on how much stronger the direct links have to be compared to the interfering links for TIN to be optimal to within a constant gap. In this work we show that it is always optimal to within a constant gap to use TIN with iid codebooks, even in presence of very strong interference. The key for TIN optimality is the use non-Gaussian iid codebooks. Such “bad” point-to-point codebooks turn out to be very “friendly” when treated as noise.
Practically interesting consequences of the optimality of TIN are for example: (a) since TIN requires neither explicit joint decoding nor time sharing, our results to oblivions or asynchronous channels; this implies that with “interference friendly” codebook design synchronization and multi-user detection requirements are much less strict than previously thought; (b) our proof derives closed form expressions for the parameters of the optimal mixed inputs; this could provide a benchmark for "Network-Assisted Interference Cancellation and Suppression (NAICS) receivers” adopted in the Long Term Evolution (LTE) Advanced Release 12; (c) TIN receivers are not necessarily complex, as they can be implemented in some regime by simple modulo operations. Work partially funded by NSF under awards 1017436 and 1422511. In collaboration with Mr A. Dytso (UIC) and Dr N. Devroye (UIC). Pre-prints at arXiv:1405.1117 and arXiv:1506.02597.
Speaker Bio
Daniela Tuninetti received her M.S. in Telecommunication Engineering from Politecnico di Torino (Italy) in 1998, and her Ph.D. in Electrical Engineering from ENST/Telecom ParisTech (with work done at the Eurecom Institute in Sophia Antipolis, France) in 2002. From 2002 to 2004 she was a postdoctoral research associate at the School of Communication and Computer Science at the EPFL/Swiss Federal Institute of Technology in Lausanne. Since January 2005, she is with the Department of Electrical and Computer Engineering at the University of Illinois at Chicago, Chicago, IL USA, where she currently is an Associate Professor.
Dr. Tuninetti was an editor for the IEEE Communication Letters and IEEE Transactions on Wireless Communications. She currently serves as an associate editor for the IEEETransactions on Information Theory, and as a treasurer for the IEEE Information Theory Society. She regularly serves on the Technical Program Committee of IEEE workshops and conferences, and she was the Communication Theory symposium co-chair of the 2010 IEEE International Conference on Communications (ICC 2010). Dr. Tuninetti received a best student paper award at the European Wireless Conference in 2002, and was the recipient of an NSF CAREER award in 2007. Her research interests are in the ultimate performance limits of wireless interference networks, with special emphasis on cognition and user cooperation. She is also interested in coexistence issues between radar and communication systems.
For more information regarding this seminar, please contact Dr. Jia Wang in ECE, IIT. Phone: 7-3696, Email: jwang@ece.iit.edu