Kim Lecture Hall, Rm. 1110
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Booz Allen Hamilton Distinguished Colloquium in Electrical and Computer Engineering:
"Fading Broadcast Channels with Channel State Known Only at the Receivers"
Dr. Roy Yates
Professor and Associate Director, WinLab, Rutgers University
September 12, 2008, 2:00 p.m.
Jeong H. Kim Engineering Building, Rm. 1110
Despite considerable progress on the information-theoretic broadcast channel, the capacity region of the fading broadcast channel with channel state known at the receivers but unknown at the transmitter remains unresolved. This talk addresses this subject by introducing a fading broadcast channel model in which each component channel has a state that specifies the received signal levels in an instance of the deterministic channel of Avestimehr, Diggavi, and Tse. We find the capacity region of this class of fading broadcast channels. The inner bound assigns each signal level to the user that derives the maximum expected rate from that level. The outer bound is based on a channel enhancement that creates a degraded broadcast channel for which the capacity region is known. This same approach is then used to find inner and outer bounds to the capacity region of the fading Gaussian broadcast channel with channel state known only at the receiver. In the case of Rayleigh fading, this yields an achievable rate region within one bit of the capacity region.
Roy Yates received the B.S.E.E. degree in 1983 from Princeton and the M.S. and Ph.D. degrees in 1986 and 1990 from MIT, all in Electrical Engineering. Since 1990, he has been with the Wireless Information Networks Laboratory (WINLAB) and the ECE department at Rutgers University. Presently, he is an Associate Director of WINLAB and a Professor in the ECE Dept. He is a co-author (with David Goodman) of the text Probability and Stochastic Processes: A Friendly Introduction for Electrical and Computer Engineers published by John Wiley and Sons. He is a co-recipient (with Christopher Rose and Sennur Ulukus) of the 2003 IEEE Marconi Prize Paper Award in Wireless Communications. His research interests include power control, interference suppression and spectrum regulation for wireless systems.
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