Noise thresholds of parallel concatenated LDPC codes

Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th（2004）

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摘要

Density evolution can determine the noise threshold of an ensemble of LDPC codes in the limit of large block lengths. In this work, the capacity of code ensembles for the parallel concatenation of LDPC codes on binary-input AWGN channels is analyzed using the density evolution technique. The noise thresholds for the optimized code ensembles show that at low rates <1/3, some good parallel concatenated LDPC codes can outperform conventional ones with a similar complexity.

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关键词

AWGN channels,concatenated codes,interleaved codes,parity check codes,LDPC code noise threshold,binary-input AWGN channels,bipartite graphs,code ensemble concatenation capacity,density evolution,low code rates,low density parity-check codes,optimized code ensemble noise threshold,parallel concatenated LDPC codes,random interleaver,

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