Title :
Joint Source-Channel Decoding of Variable-Length Encoded Markov Multiple Sources
Author :
Xiang, Weiwei ; Zou, Yan ; Lu, Peizhong
Author_Institution :
Dept. of Commun. Eng., Inf. Sci. & Technol. Inst., Zhengzhou
Abstract :
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.
Keywords :
Markov processes; combined source-channel coding; multimedia communication; variable length codes; joint source-channel decoding; multimedia transmission; symbol-error rate; time varying channels; variable-length encoded Markov multiple sources; wideband wireless communications; Computer networks; Convolution; Decoding; Electronic mail; Information science; Information security; Multimedia computing; Viterbi algorithm; Wideband; Wireless communication; Joint source-channel decoding; Viterbi decoding; multiple sources; variable-length codes;
Conference_Titel :
Networks Security, Wireless Communications and Trusted Computing, 2009. NSWCTC '09. International Conference on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-1-4244-4223-2
DOI :
10.1109/NSWCTC.2009.311
