WiSense Seminar #89, “Shedding lights on future wireless communications.”, 29 Nov. 2012

Speaker:  Dr. Salama Ikki, INRS Telecommunications, Montreal

Title: WiSense Seminar #89, “Shedding lights on future wireless communications.”, Dr. Ikki
Location: uOttawa SITE Building (800 King Edward), room 5084
Description: Abstract: Wireless channels have impairments that limit the quality and the capacity of transmission. The impairments include signal fading, co-channel interference, adjacent channel interference, noise, signal shadowing and propagation loss. Faced with ever increasing demand for user services and finite spectrum (bandwidth) resources, new and improved technologies must be developed to permit future wireless networks to sustain the increasing demands for services.
In this talk we are going to shed lights on three new techniques that can be implemented in the future generation for wireless communications networks: Cooperative networks, Massive MIMO and Spatial modulation.
Cooperative networks have been recently proposed and are gaining growing interest for future generation wireless standards. They have promise to improve wireless communication capability and provide a new paradigm for the development of efficient bandwidth usage, resulting in a significant increase of the capacity and diversity gain in wireless networks. In cooperative systems, idle users (nodes) are used as relays between the source and the destination.
Massive MIMO is an emerging technology that scales up MIMO by an order of magnitude compared to current state-of-the-art. We think of systems that use antenna arrays with a few tens (or even hundreds) antennas, that simultaneously serve many tens of terminals in the same time-frequency resource. The basic premise behind massive MIMO is to reap all the benefits of conventional MIMO, but in a much greater scale. Overall, massive MIMO is an enabler for the development of future broadband (fixed and mobile) networks which will be energy-efficient, secure, and robust, and will use the spectrum efficiently.
Spatial Modulation is an alternative and promising MIMO technique that utilizes the spatial information in a novel fashion. At each time instance, only a single transmit antenna is activated among the set of existing transmit antennas and the activated antenna index is implicitly used to convey information. As compared to other MIMO techniques, spatial modulation is shown to have several advantages among of which are, complete avoidance of inter-channel interference (ICI), relaxed inter-antenna synchronization requirements, low receiver complexity, use of a single RF chain at the transmitter, and enhanced error performance with moderate number of transmit antennas.
Bio notes: Dr. Ikki received the B.S. degree from Al-Isra University, Amman, Jordan, in 1996, the M.Sc. degree from The Arab Academy for Science and Technology and Maritime Transport, Alexandria, Egypt, in 2002, and the Ph.D. degree from Memorial University, St. John’s, NL, Canada, in 2009, all in electrical engineering. Currently he got a Lecturer position (Assistant Professor) in Communications at Newcastle University, UK. He was a research assistant in INRS, University of Quebec from Feb. 2010 to December 2012 and a post-doc in university of Waterloo from Feb. 2009 to Feb. 2010. His research interests include cooperative networks, MIMO, spatial modulation and wireless sensor networks. He published nearly 100 Journal and Conference papers in these areas with more than 860 citations and H-index of 15. He is a recipient of the Best Paper Award of his paper published in EURASIP journal on advanced signal processing.

Start Time: 10:00
Date: 2012-11-29
End Time: 12:00


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