IEEE Transactions on Mobile Computing
On the ergodic capacity of cooperative spatial multiplexing systems in composite channels
RWS'09 Proceedings of the 4th international conference on Radio and wireless symposium
Symbol error probabilities for general Cooperative links
IEEE Transactions on Wireless Communications
Square-matrix embeddable space-time block codes for complex signal constellations
IEEE Transactions on Information Theory
IEEE Transactions on Circuits and Systems for Video Technology
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In this paper, we propose an unequal error protection (UEP) scheme for multimedia transmission over wireless decode-and-forward (DF) relay networks. We prove that relay selection combining (R-SC) mode yields a better error rate performance than all-participate relays, i.e., distributed spacetime codes (DSTC) and orthogonal transmission with maximum ratio combining (OT-MRC) at the destination. Hence, we apply the R-SC scheme for transmitting bit sequence with high priority while the cooperative spatial multiplexing scheme is employed for the bit-stream with low priority. With this strategy, we achieve the maximum spatial diversity gain for high priority data and a high spatial multiplexing gain for low priority data. Monte-Carlo simulations and analytical results are shown to validate the proposed UEP scheme.