Theoretische Grundlagen der Kommunikationstechnik

Invitation to a talk by Prof. Ephraim Zehavi, Bar Ilan University, Israel

Time2 September 2016, 10:00 AM  
LocationHFT - Hochfrequenztechnik building, 6th floor, Room HFT-TA 617, Einsteinufer 25, 10587 Berlin  
TitleCooperative Strategies for sharing radio resources  


Modern wireless communication system is operating over multiple frequency selective channels in which users can change their transmission or reception parameters to communicate efficiently by avoiding interference from other users. In the last several years major research effort was concentrated on finding cooperative strategies for allocating radio resources efficiently under system constraints like total power constraint, mask constraints and more. While the single-carrier problems are commonly easily to address, the multi-carrier problems are more complex and have major role in the evolution of future wireless systems based on Orthogonal Frequency Division Multi Access (OFDM), like LTE and 5G. In the talk we will outline several cooperative approaches to find agreeable solutions for sharing K frequency bins between N users. The following solutions will be introduced: Nash bargaining solution, Aumann Solution and Raiffa bargaining solution . We will also show that all these solutions can be written as a solution to a weighted max-min problem, where at most N-1 frequency bins have to be shared by more than one user.



Ephraim Zehavi received his B.Sc. and M.Sc.degrees in electrical engineering from the Technion-Israel Institute of Technology in Haifa, in 1977 and 1981, respectively, and his Ph.D. degree in electrical engineering from the University of Massachusetts, Amherst,  in 1986. In 1985, he joined Qualcomm Inc. in San Diego, California. From 1988 to 1992, he was a faculty member at the Department of Electrical Engineering, Technion-Israel Institute of Technology. In 1992, he rejoined Qualcomm Inc. as a principal engineer. Upon his return to Israel in 1994, he became an assistant general manager of engineering for Qualcomm Israel, Ltd., and later became the general manager. In 1999, he co-founded Mobilian Inc. and served as CTO until 2002. In 2003, he joined the faculty of Engineering at Bar Ilan University, where he is now the Dean of the Faculty.

Dr. Zehavi is a Fellow of IEEE. He is the co-recipient of the 1994 IEEE Stephen O. Rice Award and is named as an IEEE fellow for his contribution to pragmatic coding and bit interleaving; he also holds more than 40 patents in the area of coding and wireless communication. His main research interests include wireless communications, coding technology, and applications of game theory to communication.