基于改进中断概率的非相关瑞利衰落信道LDPC码设计

IF 4.1 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

ICT Express Pub Date : 2025-06-01 DOI:10.1016/j.icte.2025.03.005

Woong-Shin Kwak, Jae-Won Kim

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引用次数: 0

摘要

在本文中，我们提出了一种新的设计度量，称为改进的中断概率（MOP），用于在不相关瑞利衰落信道上基于原型的低密度奇偶校验（LDPC）码。与传统的阈值度量相比，MOP可以准确地预测衰落信道上的帧错误率（FER）性能。基于MOPs，我们优化了基于原型的LDPC代码，同时考虑了精度和计算复杂度之间的权衡。结果表明，在中码率和高码率区域，优化后的LDPC码在FER为10−4时优于传统的基于阈值的LDPC码。

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Design of LDPC code for uncorrelated Rayleigh fading channel using modified outage probability

In this paper, we propose a new design metric called modified outage probability (MOP) for protograph-based low-density parity-check (LDPC) codes over the uncorrelated Rayleigh fading channel. In contrast to the conventional threshold metric, the MOP predicts the frame error rate (FER) performance accurately over the fading channel. Based on MOPs, we optimize protograph-based LDPC codes while considering the trade-off between accuracy and computational complexity. It is shown that the optimized LDPC codes outperform the conventional threshold-based LDPC codes at the FER of

1 0^{- 4}

for the both medium and high code-rate regions.

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来源期刊

ICT Express Multiple-

CiteScore

10.20

自引率

1.90%

发文量

167

审稿时长

35 weeks

期刊介绍： The ICT Express journal published by the Korean Institute of Communications and Information Sciences (KICS) is an international, peer-reviewed research publication covering all aspects of information and communication technology. The journal aims to publish research that helps advance the theoretical and practical understanding of ICT convergence, platform technologies, communication networks, and device technologies. The technology advancement in information and communication technology (ICT) sector enables portable devices to be always connected while supporting high data rate, resulting in the recent popularity of smartphones that have a considerable impact in economic and social development.