Title: Diversity and Multiplexing: A Fundamental Tradeoff in Wireless Systems
Speaker: David Tse, University of California, Berkeley
Date: April 14, 2003 1:30pm
Location: DIMACS Center, CoRE Bldg, Room 431, Rutgers University, Busch Campus, Piscataway, NJ
The amount of diversity and the total number of degrees of freedom are two important resources in a wireless system. Traditionally they have been considered in isolation. We propose the point of view of describing the performance of communication schemes as a tradeoff between the amount of these two resources actually utilized.The optimal tradeoff achievable by any scheme provides then a fundamental benchmark with respect to which actual schemes can be judged. We give several examples on which this framework can be applied: 1) point-to-point MIMO links, 2) multiple access MIMO channels 3) frequency-selective ISI channels; 4) cooperative relaying systems.