Ontage-Optimal Relaying

December 2, 2005
Professor David Tse, Department of EECS, Berkeley, California

In a slow fading wireless channel, cooperation between nodes can be used to increase diversity by helping each other to relay information. The optimal relaying performance is characterized by the outage capacity of the channel. We analyse the outage capacity of a 3-node relay channel with independent Rayleigh-faded links and half duplex constraint , i.e. the relay cannot transmit and receive at the same time. We present optimal relaying strategies in both the high and the low SNR regimes. This is joint work with A. Salman Avestimehr.

David Tse received the B.A.Sc. degree in systems design engineering from University of Waterloo, Canada in 1989, and the M.S. and Ph.D. degrees in electrical engineering from Massachusetts Institute of Technology in 1991 and 1994 respectively. From 1994 to 1995, he was a postdoctoral member of technical staff at A.T. & T. Bell Laboratories. Since 1995, he has been at the Department of Electrical Engineering and Computer Sciences in the University of California at Berkeley, where he is currently a Professor. He received a 1967 NSERC 4-year graduate fellowship from the government of Canada in 1989, a NSF CAREER award in 1998, the Best Paper Awards at the Infocom 1998 and Infocom 2001 conferences, the Erlang Prize in 2000 from the INFORMS Applied Probability Society, the IEEE Communications and Information Theory Society Joint Paper Award in 2001, and the Information Theory Society Paper Award in 2003. He was the Technical Program co-chair of the International Symposium on Information Theory in 2004, and was an Associate Editor of the IEEE Transactions on Information Theory from 2001 to 2003. He is a coauthor, with Pramod Viswanath, of the text "Fundamentals of Wireless Communication". His research interests are in information theory, wireless communications and networking.