Multiple Scaling Extrinsic Soft Information for Improved Min-Sum Iterative Decoding of LDPC Codes

Cheon Ho LEE; Young Chai KO; Jun HEO

doi:10.1093/ietfec/e91-a.10.2874

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

Online ISSN : 1745-1337
Print ISSN : 0916-8508

Special Section on Information Theory and Its Applications

Multiple Scaling Extrinsic Soft Information for Improved Min-Sum Iterative Decoding of LDPC Codes

Cheon Ho LEE, Young Chai KO, Jun HEO

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Keywords: LDPC codes, min-sum decoding, scaling

JOURNAL RESTRICTED ACCESS

2008 Volume E91.A Issue 10 Pages 2874-2876

DOI https://doi.org/10.1093/ietfec/e91-a.10.2874

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Abstract

This paper presents an improved min-sum iterative decoding scheme for regular and irregular LDPC codes. The proposed decoding scheme scales the extrinsic soft information from variable nodes to check. Different scaling factors are applied for iterations and the scaling factors are obtained by a simplified vector optimization method.

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