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Diversity and freedom: a fundamental tradeoff in wireless systems

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1 Author(s)
Tse, D. ; Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA

Summary form only given. 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 actual utilized amount of these two resources. The optimal tradeoff achievable by any scheme provides a fundamental benchmark with respect to which the 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.

Published in:

Signal Processing Advances in Wireless Communications, 2003. SPAWC 2003. 4th IEEE Workshop on

Date of Conference:

15-18 June 2003

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