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Reconfigurable Antenna-based Space-Shift Keying (SSK) for Future Wireless Networks By Prof. Ali Ghrayeb (Texas A&M University at Qatar)

  • Class schedule:  Wednesday​, Mar. 04th, 2015   from  01:00 pm to 02:00 pm
  • Location: Building 1, Room 3119​​
  • Refreshments:  Available @ 12:45 pm 

Since the turn of the century, cellular industry has been experiencing a tremendous growth in mobile data traffic. Challenged by this unprecedented data surge, researchers and network operators have proposed and implemented new protocols, transmission technologies, and network infrastructure solutions aiming at maximizing both the spectral efficiency and the achievable throughput. While these solutions are optimized from the spectral efficiency perspective, they are generally not well designed to address the related complexity and power consumption issues. Thus, achieving high data rates with these techniques comes at the expense of high-energy consumption and increased system complexity. In this context, the concepts of spatial modulation (SM) and space-shift keying (SSK) were proposed as energy-efficient implementations of MIMO systems. While the use of a single RF chain in these techniques improves the energy efficiency, it comes with an implementation problem due to RF switching between different transmissions. In order to address this issue, the use of reconfigurable antennas (RAs) allows for using one RF chain and selecting antenna-states without the need for RF switching.  Moreover, RAs offer reconfiguration capability and properties that can be used as additional degrees of freedom in order to improve the performance of wireless communication systems. To this end, the combination of SSK with RAs looks to be very promising in terms of cost, complexity, and performance.

Ali Ghrayeb received the Ph.D. degree in electrical engineering from the University of Arizona, Tucson, USA in 2000. He is currently a Professor with the Department of Electrical and Computer Engineering, Texas A&M University at Qatar (on leave from Concordia University, Montreal, Canada.) He is a co-recipient of the IEEE Globecom 2010 Best Paper Award. He is the coauthor of the book Coding for MIMO Communication Systems (Wiley, 2008). His research interests include wireless and mobile communications, MIMO systems, wireless cooperative networks, physical layer security, and cognitive radio systems. He has instructed/co-instructed technical tutorials at several major IEEE conferences. He served as a co-chair of the Communications Theory Symposium of IEEE Globecom 2011. He is serving as the Executive Chair of the 2016 IEEE WCNC conference.  He serves as an Editor of the IEEE Transactions on Wireless Communications, and the IEEE Transactions on Communications. He served as an Associate Editor of IEEE Transactions on Signal Processing, IEEE Transactions on Vehicular Technology, the Elsevier Physical Communications, and the Wiley Wireless Communications and Mobile Computing Journal