Approximation to the Capacity of Rician Fading MIMO Channels

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Executive Summary

In this paper, the capacity of Multiple-Input Multiple-Output (MIMO) systems over a Rician fading channel is evaluated. The authors show that the capacity of MIMO Rician channels can be well approximated by that of correlated MIMO Rayleigh channels. They take the Rician channel with rank-1 mean matrices as an example, the asymptotic capacities at low and high Signal-to-Noise Ratio (SNR) regions are analyzed. Finally, the asymptotic capacity loss of Rician channels relative to Rayleigh channels is derived.

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