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

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 imp...

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Veröffentlicht in:IEEE communications letters Jg. 18; H. 12; S. 2065 - 2068
Hauptverfasser: Catala-Perez, J. M., Garcia-Herrero, F., Valls, J., Liu, K., Lin, S.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: IEEE 01.12.2014
Schlagworte:
Bit error rate
bit-flipping
Complexity theory
Decoding
Degradation
HE-RBID
Iterative decoding
LDPC codes
Parity check codes
historical-extrinsic reliability-based iterative decoder (HE-RBID)
Low-density Parity-Check (LDPC) codes
decoding
bit-flipping
ISSN:1089-7798
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Zusammenfassung: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.
ISSN:1089-7798
DOI:10.1109/LCOMM.2014.2363112