Joint Source-Channel Decoding of Variable-Length Encoded Markov Multiple Sources

Joint source-channel decoding (JSCD) has been shown to be effective for multimedia transmission over time varying channels. In this paper, we present a method for joint source-channel soft decision decoding of variable-length encoded multiple sources. Compared with the single source decoding scheme addressed by Marion Jeanne, the proposed technique is more practical in wideband wireless communications. Simulation results show our new method obtains substantial improvements with a minor increasing of complexity. For two sources, the gain in SNR is around 1.5 dB when symbol-error rate (SER) reaches 10
^-2
and around 1.3 dB when SER=10
^-3
.