# Exponential Diversity Achieving Spatio-Temporal Power Allocation Scheme for MIMO Fading Channels

Premkumar, K and Rangarajan, A and Sharma, Vinod (2004) Exponential Diversity Achieving Spatio-Temporal Power Allocation Scheme for MIMO Fading Channels. In: International Symposium on Information Theory, 2004. ISIT 2004, 27 June-2 July, Chicago, 283 -283.

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## Abstract

We analyze optimum (space-time) adaptive power transmission policies for Rayleigh fading MIMO channels when CSIT and CSIR are available. We show that our power allocation policy provides exponential diversity $gain^2$ $BER\leq\alpha{e}{^-^f^(^{n_t}^,^{n_r}^)}$ where $\alpha{>}{0}$ is a constant, and $f>0$ is an increasing function of $n_t$ & $n_r$ if perfect CSIT is available. Exponential diversity is lost at high SNR if the quality of CSIT degrades.

Item Type: Conference Paper Â©1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. Division of Electrical Sciences > Electrical Communication Engineering 12 Dec 2005 19 Sep 2010 04:21 http://eprints.iisc.ernet.in/id/eprint/4356