Optimal Diversity-Multiplexing Tradeoff in Selective-Fading MIMO Channels

The authors establish the optimal Diversity-Multiplexing (DM) trade-off of coherent time, frequency, and time-frequency selective-fading Multiple-Input Multiple-Output (MIMO) channels and provide a code design criterion for DM trade-off optimality. The results are based on the new concept of the "Jensen channel" associated to a given selective-fading MIMO channel. While the original problem seems analytically intractable due to the mutual information between channel input and output being a sum of correlated random variables, the Jensen channel is equivalent to the original channel in the sense of the DM trade-off and lends itself nicely to analytical treatment.

Provided by: ETH Zurich Topic: Mobility Date Added: Jul 2011 Format: PDF

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