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Pre-Coding for Rapidly Time Varying MIMO Communication Channels

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2 Author(s)
Rezk, M. ; Univ. of California, Santa Cruz ; Friedlander, B.

We consider a multiple input multiple output (MIMO) communication system with only statistical channel information available at the receiver. This assumption corresponds to the case of a rapidly varying channel, were channel estimation is difficult or impossible. A low complexity minimum mean squared error (MMSE) based detector is developed for the case where the channel covariance matrix is assumed to have a low rank. A space time block code (STBC) is used to code across multiple symbol vectors to increase the channel rank which can be handled by the detector. A MSE precoder is designed to further improve detection performance.

Published in:

Signals, Systems and Computers, 2007. ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on

Date of Conference:

4-7 Nov. 2007