List Message Passing Decoding of Non-binary Low-Density Parity-Check Codes

04/13/2021

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by   Emna Ben Yacoub, et al.

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A decoding algorithm for q-ary low-density parity-check codes over the q-ary symmetric channel is introduced. The exchanged messages are lists of symbols from . A density evolution analysis for maximum list sizes 1 and 2 is developed. Thresholds for selected regular low-density parity-check code ensembles are computed showing gains with respect to a similar algorithm in the literature. Finite-length simulation results confirm the asymptotic analysis.