Diversity-Fidelity Tradeoff in transmission of analog sources over MIMO fading channels

In this paper, the theoretical limits on the asymptotic performance of joint source-channel coding over MIMO fading channels are investigated. Similar to the concept of diversity-multiplexing tradeoff (DMT) in digital MIMO systems, a new measure for the asymptotic high-SNR performance of MIMO source-channel codes is introduced, which is called diversity-fidelity tradeoff, and the optimal tradeoff is characterized. Also, the problem of constructing robust MIMO source-channel codes, which are not sensitive to the knowledge of the SNR, is investigated and a semi-robust scheme is proposed.