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Nonbinary low-density parity-check (NB-LDPC) codes are an extension of binary LDPC codes with significantly better performance. Although various kinds of low-complexity iterative decoding algorithms have been proposed, the VLSI implementation of NB-LDPC decoders still remains a big challenge due to its high complexity and long latency. In this brief, a highly efficient check node processing scheme,...
This paper presents a low-power decoder design approach for generic quasi-cyclic low-density parity-check (QC-LDPC) codes based on the layered min-sum decoding algorithm. To reduce the energy consumption, a novel message length-shortening scheme is explored. The check node processing unit (CNU) is accordingly optimized using bit-serial architecture. This low cost design scheme can greatly lower the...
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