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Soft-decision priority-first decoding algorithms for variable-length error-correcting codes
DOI:10.1109/LCOMM.2008.080561.png)
摘要
En 中文
Joint source-channel decoding has recently received extensive attention due to the rise in the applications of multimedia wireless communication. Based on a code trellis rather than on a code tree, this work presents a maximum a posteriori (MAP) soft-decision priority-first decoding algorithm and its approximations for variable-length error-correcting codes. Simulation results indicate that for the code with average codeword length 6.269 bits and free distance 3, under moderate signal-to-noise ratio, one of the proposed algorithms almost reaches the lowest decoding complexity, and has nearly the same performance on symbol error probability as the MAP decoding.
Keyword:
variable-length error-correcting codes
MAP
soft-decision
joint source/channel coding
期刊
IF:
4.4
论文数:
1.3W
被引数:
2.2W
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