Efficient ADMM Decoder for Binary LDPC Codes in Low-Iteration Regime

IF 4.4 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-07-02 DOI:10.1109/LCOMM.2025.3585192

Yuxin Cheng;Yujie Ma;Qinglin Zhang;Qiaoqiao Xia

引用次数: 0

Abstract

The alternating direction method of multipliers (ADMM) algorithm for decoding low-density parity-check (LDPC) codes has attracted significant attention because of its superior performance. The convergence characteristic has been regarded as a crucial element to enhance its advantage in practice. In this letter, an efficient ADMM decoder for binary LDPC codes is proposed by adjusting the position of the Euclidean projection to enhance the convergence behavior. The simulation results show that the proposed algorithm can improve the FER performance by 1.1dB as well as save average decoding iterations by 13% compared with the existing CSA when the maximum number of iterations is set to 20. The proposed algorithm can be suitable for use at low-iteration regime in high-throughput scenarios.

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低迭代条件下二进制LDPC码的高效ADMM解码器

交替方向乘法器译码算法（ADMM）因其优越的译码性能而受到广泛关注。在实践中，收敛性被认为是增强其优势的关键因素。本文提出了一种有效的二进制LDPC码ADMM解码器，通过调整欧几里得投影的位置来增强其收敛性。仿真结果表明，当最大迭代次数为20次时，与现有的CSA相比，该算法可将FER性能提高1.1dB，平均解码迭代次数减少13%。该算法适用于高吞吐量场景下的低迭代模式。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.