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Joint source-channel decoding of variable-length codes for convolutional codes and turbo codes
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DOI：10.1109/TCOMM.2004.840664.png)
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摘要
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Several recent publications have shown that joint source-channel decoding could be a powerful technique to take advantage of residual source redundancy for fixed- and variable-length source codes. This letter gives an in-depth analysis of a low-complexity method recently proposed by Guivarch et al, where the redundancy left by a Huffman encoder is used at a bit level in the channel decoder to improve its performance. Several simulation results are presented, showing for two first-order Markov sources of different sizes that using a priori knowledge of the source statistics yields a significant improvement, either with a Viterbi channel decoder or with a turbo decoder.
Keyword:
convolutional codes (CCs)
joint source-channel coding
turbo codes (TCs)
variable-length codes (VLCs)
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期刊
IF:
8.3
论文数:
1.2W
被引数:
3.6W
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