Professor Sebastien Roy
RF-level processing in multi-antenna transceivers
Multi-antenna transceivers are increasingly common in various wireless communication systems and their first order role in dealing with spectrum congestion is well established. However, there remains an important impediment to their adoption, especially at larger array sizes: the cost and size associated with RF chain replication. It will be shown that the number of RF chains can be substantially reduced by implementing part of the array processing at the RF stage with very little performance degradation. Among such strategies, the important topic of subset selection will be discussed at length, both from a theoretical and a practical perspective. We will see that popular selection strategies in the literature (such as generalized selection combining) lead to excessive complexity and insertion loss at the RF stage.
Prof. Sébastien Roy received the B.Sc. and M.Sc. degrees in electrical engineering from Laval University, Québec, QC, Canada, in 1991 and 1993, respectively, and the Ph.D. degree from Carleton University, Ottawa, ON, Canada, in 2000. He is currently a Full Professor with the Department of Electrical and Computer Engineering, Sherbrooke University, where he is pursuing research in the system‐level and implementation aspects of signal processing for communications as well as space‐ time processing and space‐time coding. From 2000 to 2002, he was a Natural Sciences and Engineering Research Council of Canada (NSERC) Postdoctoral Fellow at Laval University. He has also been active in industrial consulting and was involved in the organization of several international conferences. In 2007, 2009, and 2011, he was invited professor at l'École Nationale Supérieure de Sciences Appliquées et de Technologie (ENSSAT), Lannion, France. He received multiple teaching awards and in 2007 received the award for excellence in technology transfer from the strategic network on Systems and Technologies for Advanced Communications (SYTAcom). Dr. Roy was also awarded the award for Post‐Graduate Research Excellence from the Canadian Institute for Telecommunications Research in 2000.
Invited by professor Amir K. Khandani.