移动通信2026，Vol.50Issue(5)：2-6,18,6.DOI:10.3969/j.issn.1006-1010.20260320-0003
面向6G的速率兼容LDPC码设计
Design of Rate-Compatible LDPC Codes for 6G
摘要
Abstract
To support high-throughput application scenarios in 6G,this paper proposes a rate-compatible quasi-cyclic low-density parity-check(QC-LDPC)code design method based on 5G low-density parity-check(LDPC)codes.Existing 5G LDPC codes support a maximum data rate of approximately 20 Gbps in the downlink,which has become insufficient for future higher-throughput requirements.Accordingly,a new class of QC-LDPC codes is constructed by extending the range of lifting factors supported by 5G LDPC codes.From the perspective of cycle-structure optimization,a systematic design method is proposed for large-size lifting factors based on the criteria of maximum girth and the minimum number of shortest cycles.Simulation results show that,compared with DVB-S2 short-frame LDPC codes,the designed rate-compatible LDPC codes achieve a performance gain of 0.2-0.3 dB.The proposed method is applicable not only to 6G high-throughput communication scenarios,but also to future integrated satellite-terrestrial communication systems.关键词
6G/LDPC码/速率兼容/星地融合通信Key words
6G/LDPC codes/rate-compatible/integrated satellite-terrestrial communication分类
信息技术与安全科学引用本文复制引用
王汶振,李华安,朱敏,白宝明..面向6G的速率兼容LDPC码设计[J].移动通信,2026,50(5):2-6,18,6.基金项目
国家自然科学基金项目"高谱效抗干扰自组网通信的变换域调制波形设计方法"(U254120087) （U254120087）
国家重点研发计划"面向未来无线通信信息处理若干关键问题的数学理论和方法"(2021YFA1000500) （2021YFA1000500）
