IEEE / UBC ECE Communications Seminar

27 May 2015 @ 11:00 – 12:00
Room 418, Macleod Building, UBC
2356 Main Mall
Vancouver, BC V6T 1Z4

Title: Recent Advances in Spatial Modulation

Presented by:
Professor Hikmet Sari, SUPELEC, France

Abstract: Spatial modulation (SM) is a MIMO technique, which was introduced for wireless systems in which the number of RF chains is smaller than the number of transmit antennas. The principle is to convey information bits using the index(es) of the active antenna(s). In this talk, we review conventional SM and present a newly introduced technique using one or two active antennas and multiple signal constellations. This technique, which we refer to as Enhanced SM or ESM, conveys information bits not only by the index(es) of the active antenna(s), but also by the constellations transmitted from each of them. The main feature of Enhanced SM is that it uses a primary signal constellation during the single active antenna periods and some other secondary constellations during the periods with two active transmit antennas. The secondary signal constellations are derived from the primary constellation by means of geometric interpolation in the signal space. We give design examples using two and four transmit antennas and QPSK, 16QAM and 64QAM as primary modulations. The proposed technique is compared to conventional SM as well as to spatial multiplexing (SMX), and the results indicate that in most cases, ESM provides a substantial performance gain over conventional SM and SMX, while reducing the maximum-likelihood (ML) decoder complexity.

Biography: Hikmet Sari is a Professor and Head of the Telecommunications Department at SUPELEC, France, and Chief Scientist of Sequans Communications. Previously, he held research and management positions at Philips, SAT, Alcatel, Pacific Broadband Communications, and Juniper Networks. He received his Engineering Diploma and Ph.D. from the ENST, Paris, France, and the Habilitation degree from the University of Paris-Sud, Orsay.

Dr. Sari has served as an Editor of the IEEE Transactions on Communications, Guest Editor of the European Transactions on Telecommunications, Guest Editor of IEEE JSAC, Associate Editor of the IEEE Communications Letters, Chair of the Communication Theory Symposium of ICC 2002, Technical Program Chair of ICC 2004, Vice General Chair of ICC 2006, General Chair of PIMRC 2010, General Chair of WCNC 2012, Executive Chair of WCNC 2014, Chair of the GITC in 2010 – 2011, Distinguished Lecturer of the IEEE Communications Society (2001 – 2006), Member of the IEEE Fellow Evaluation Committee (2002 – 2007), and Member of the Awards Committee (2005 – 2007) of this society. He is currently serving as Executive Vice-Chair of ICC 2016, Executive Chair of ICC 2017, and Vice-President – Conferences of the IEEE Communications Society.

His distinctions include the IEEE Fellow Grade and the Andre Blondel Medal in 1995, the Edwin H. Armstrong Award in 2003, the Harold Sobol Award in 2012, and election to the European Academy and to the Science Academy of Turkey in 2012.