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Addressing Spectrum Scarcity through Cognitive Radio and Optical Wireless Communications By Prof. Mohamed-Slim Alouini (KAUST)

  • Class schedule:  Thursday, March 26th, 2015 from 12:00 pm to 1:00 pm
  • Location: Building 9, Room 3131
  • Refreshments: Pizza and soft drinks will be available at 11:45 am

Rapid increase in the use of wireless services over the last two decades has lead the problem of the radio-frequency (RF) spectrum exhaustion. More specifically, due to this  RF spectrum scarcity, additional RF bandwidth allocation, as utilized in the recent past, is not anymore a viable solution to fulfill the demand for more wireless applications and higher data rates. In this context, the concept of cognitive networks has emerged as one of the efficient means for utilizing the scarce spectrum by allowing spectrum sharing between a licensed primary network and a secondary network. In this talk, we briefly present an overview of various recently proposed types of antenna selection and power adaptation schemes used to improve the capacity of cognitive networks. The talk goes then over the potential offered by  optical wireless communications to relieve spectrum scarcity and then summarizes some of the challenges that need to be surpassed before such kind of systems can be massively deployed.

Mohamed-Slim Alouini (S'94, M'98, SM'03, F’09) was born in Tunis, Tunisia. He received the Ph.D. degree in Electrical Engineering from the California Institute of Technology (Caltech), Pasadena, CA, USA, in 1998. He served as a faculty member in the University of Minnesota, Minneapolis, MN, USA, then in the Texas A&M University at Qatar, Education City, Doha, Qatar before joining King Abdullah University of Science and Technology (KAUST), Thuwal, Makkah Province, Saudi Arabia as a Professor of Electrical Engineering in 2009. His current research interests include the modeling, design, and performance analysis of wireless communication systems. ​