Efficient Early Termination Criterion for ADMM Penalized LDPC Decoder

Biao WANG; Xiaopeng JIAO; Jianjun MU; Zhongfei WANG

doi:10.1587/transfun.E101.A.623

Regular Section

Efficient Early Termination Criterion for ADMM Penalized LDPC Decoder

Biao WANG, Xiaopeng JIAO, Jianjun MU, Zhongfei WANG

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Keywords: alternating direction method of multipliers, low-density parity-check codes, early termination, penalized decoding

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2018 Volume E101.A Issue 3 Pages 623-626

DOI https://doi.org/10.1587/transfun.E101.A.623

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Abstract

By tracking the changing rate of hard decisions during every two consecutive iterations of the alternating direction method of multipliers (ADMM) penalized decoding, an efficient early termination (ET) criterion is proposed to improve the convergence rate of ADMM penalized decoder for low-density parity-check (LDPC) codes. Compared to the existing ET criterion for ADMM penalized decoding, the proposed method can reduce the average number of iterations significantly at low signal-to-noise ratios with negligible performance degradation.

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