Reliability-Based Iterative Decoding Algorithm for LDPC Codes With Low Variable-Node Degree

Author

Catala-Perez, J.M. ; Garcia-Herrero, F. ; Valls, J. ; Liu, K. ; Lin, S.

Author_Institution

iTEAM, Univ. Politec. de Valencia, Gandia, Spain

Volume

18

Issue

12

fYear

2014

fDate

Dec. 2014

Firstpage

2065

Lastpage

2068

Abstract

In this letter, a new reliability-based iterative majority-logic decoding (RBI-MLGD) algorithm that computes the extrinsic information of previous iterations of the variable node is proposed. This decoding algorithm is called historical-extrinsic reliability-based iterative decoder (HE-RBID) and improves the bit-error-rate performance of the previous RBI-MLGD. HE-RBID is particularly interesting for codes with a low degree of variable node, where traditional RBI-MLGD algorithms do not provide a good behavior. HE-RBID ensures a good performance without searching for the minimum at the check node and only by exchanging 1-bit messages between variable and check nodes.

Keywords

codecs; error statistics; iterative decoding; majority logic; parity check codes; reliability; HE-RBID; LDPC codes; RBI-MLGD algorithm; bit error rate; check nodes; historical-extrinsic reliability-based iterative decoder; low-density parity check codes; reliability-based iterative majority-logic decoding algorithm; variable-node degree; Bit error rate; Complexity theory; Decoding; Degradation; Iterative decoding; Parity check codes; HE-RBID; LDPC codes; Low-density Parity-Check (LDPC) codes; bit-flipping; decoding; historical-extrinsic reliability-based iterative decoder (HE-RBID);

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2014.2363112

Filename

6924716