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Improved Hard-Reliability Based Majority-Logic Decoding for Non-Binary LDPC Codes
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DOI：10.1109/LCOMM.2016.2623783.png)
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Abstract
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This letter proposes two methods to improve the iterative hard-reliability based majority-logic decoding algorithm for non-binary low-density parity-check (NB-LDPC) codes. The first method improves the error-correcting performance by modifying the initialization process, which is based on the fact that Gray coded modulation is used in general. In addition, a storage reduction method is proposed to make the proposed decoding hardware-friendly, which reduces the memory size considerably while sustaining the error-correcting performance achieved by the modified initialization. For an NB-LDPC code over Galois field of 32 elements, the memory size is reduced by about 75% compared with that of the conventional decoding algorithm.
Keywords:
Iterative hard-reliability based majority-logic
decoding (IHRB-MLGD)
non-binary low-density parity-check
(NB-LDPC) codes
re-initialization
truncation
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