Further Improvements in Decoding Performance for 5G LDPC Codes Based on Modified Check-Node Unit

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dc.contributor.authorTran-Thi, B. N.
dc.contributor.authorNguyen-Ly, T. T.
dc.contributor.authorHoang, T.
dc.coverage.issue2cs
dc.coverage.volume32cs
dc.date.accessioned2023-10-11T07:43:38Z
dc.date.available2023-10-11T07:43:38Z
dc.date.issued2023-06cs
dc.description.abstractOne of the most important units of Low-Density Parity-Check (LDPC) decoders is the Check-Node Unit. Its main task is to find the first two minimum values among incoming variable-to-check messages and return check-to-variable messages. This block significantly affects the decoding performance, as well as the hardware implementation complexity. In this paper, we first propose a modification to the check-node update rule by introducing two optimal offset factors applied to the check-to-variable messages. Then, we present the Check-Node Unit hardware architecture which performs the proposed algorithm. The main objective of this work aims to improve further the decoding performance for 5th Generation (5G) LDPC codes. The simulation results show that the proposed algorithm achieves essential improvements in terms of error correction performance. More precisely, the error-floor does not appear within Bit-Error-Rate (BER) of 10^(-8), while the decoding gain increases up to 0.21 dB compared to the baseline Normalized Min-Sum, as well as several state-of-the-art LDPC-based Min-Sum decoders.en
dc.formattextcs
dc.format.extent226-235cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2023 vol. 32, č. 2, s. 226-235. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2023.0226en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/214325
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2023/23_02_0226_0235.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectBit error rateen
dc.subjectCNU architectureen
dc.subjectLDPC codesen
dc.subjectlow computational complexityen
dc.subjectMin-Sum algorithmen
dc.subjectNormalized Min-Sumen
dc.titleFurther Improvements in Decoding Performance for 5G LDPC Codes Based on Modified Check-Node Uniten
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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