Limits on the Robustness of MIMO Joint Source-Channel Codes

Details Limits on the Robustness of MIMO Joint Source-Channel Codes Limits on the Robustness of MIMO Joint Source-Channel Codes

2009-10-30

arxiv.org/abs/0910.5950v1

Computer Science

Information Theory

presented at Allerton Conference 2009

Scientific paper

In this paper, the theoretical limits on the robustness of MIMO joint source channel codes is investigated. The case in which a single joint source channel code is used for the entire range of SNRs and for all levels of required fidelity is considered. Limits on the asymptotic performance of such a system are characterized in terms of upper bounds on the diversity-fidelity tradeoff, which can be viewed as an analog version of the diversity-multiplexing tradeoff. In particular, it is shown that there is a considerable gap between the diversity-fidelity tradeoff of robust joint source-channel codes and the optimum tradeoff (without the constraint of robustness).

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