Design of Lookup-Table (LUT) Decoder for Protograph-Based Low-Density Parity-Check (LDPC) codes

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dc.contributor.authorDuangthong, Chatuporn
dc.contributor.authorPhakphisut, Watid
dc.date.accessioned2026-08-06T10:34:55Z
dc.date.available2026-08-06T10:34:55Z
dc.date.issued2022-01-01
dc.description.abstractThe Belief-propagation (BP) algorithm is a powerful decoder for LDPC codes. However, the BP algorithm requires the high complexity of the check node operation. Therefore, in the previous works, a lookup table (LUT)-based decoder has been proposed for LDPC codes. In this work, we propose the LUT design for protograph LDPC codes. Our LUT design can support the parallel edge, variable node with degree-1 and punctured variable node. As a result, the coding losses of 2-, 3-and 4-bit quantization of LUT decoder are 1.6, 0.5 and 0.1 dB compared to BP algorithm.
dc.identifier.citationItc Cscc 2022 37th International Technical Conference on Circuits Systems Computers and Communications, 844-847, 2022
dc.identifier.doi10.1109/ITC-CSCC55581.2022.9895041
dc.identifier.other2-s2.0-85140597769
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/12660
dc.sourceItc Cscc 2022 37th International Technical Conference on Circuits Systems Computers and Communications
dc.subjectchannel quantizer
dc.subjectLUT-based decoder
dc.subjectprotograph density evolution
dc.subjectprotograph LDPC code
dc.titleDesign of Lookup-Table (LUT) Decoder for Protograph-Based Low-Density Parity-Check (LDPC) codes
dc.typeConference Paper

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