Self-Adaptive Scaled Min-Sum Algorithm for LDPC Decoders Based on Delta-Min

Keol CHO  Ki-Seok CHUNG  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E99-A   No.8   pp.1632-1634
Publication Date: 2016/08/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E99.A.1632
Type of Manuscript: LETTER
Category: Coding Theory
low-density parity check (LDPC) code,  LDPC decoder,  min-sum algorithm,  adaptive min-sum algorithm,  

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A self-adaptive scaled min-sum algorithm for LDPC decoding based on the difference between the first two minima of the check node messages (Δmin) is proposed. Δmin is utilized for adjusting the scaling factor of the check node messages, and simulation results show that the proposed algorithm improves the error correcting performance compared to existing algorithms.