重庆大学计算机科学与技术系,重庆 401331
[ "吴昊龙 男,2000年出生于重庆市.现为重庆大学计算机学院硕士研究生.主要研究方向为LDPC码字盲识别.E-mail: whl@stu.cqu.edu.cn" ]
[ "李晓丹 女,1998年出生于福建省福州市.现为重庆大学计算机学院博士研究生.主要研究方向为信道编码及其盲识别.E-mail: lxd@stu.cqu.edu.cn" ]
[ "邹林岐 男,1998年出生于四川省广元市.2020年获得重庆邮电大学(CQUPT)数学专业理学学士学位,2024年获得重庆大学(CQU)计算机科学与技术工学硕士学位.主要研究方向为信息论与编码理论.E-mail: linqizou777@gmail.com" ]
[ "刘锐 男,1995年出生于重庆市.现为重庆大学计算机学院在读博士生.主要研究方向为编码分布式计算、信道编码.E-mail: snowwhite@uestc.edu.cn" ]
[ "黎勇 男,1982年出生于重庆市.现为重庆大学教授、博士生导师.主要研究方向为信息编码理论及应用、计算机视觉、医学图像处理等.中国电子学会会员编号:E190130735M.E-mail: yongli@cqu.edu.cn" ]
收稿:2024-12-30,
修回:2025-06-24,
纸质出版:2025-07-25
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吴昊龙, 李晓丹, 邹林岐, 等. 5G-LDPC码的闭集盲识别研究[J]. 电子学报, 2025, 53(07): 2193-2200.
WU Hao-long, LI Xiao-dan, ZOU Lin-qi, et al. Research on Closed-Set Blind Recognition of 5G-LDPC Codes[J]. Acta Electronica Sinica, 2025, 53(07): 2193-2200.
吴昊龙, 李晓丹, 邹林岐, 等. 5G-LDPC码的闭集盲识别研究[J]. 电子学报, 2025, 53(07): 2193-2200. DOI:10.12263/DZXB.20241175
WU Hao-long, LI Xiao-dan, ZOU Lin-qi, et al. Research on Closed-Set Blind Recognition of 5G-LDPC Codes[J]. Acta Electronica Sinica, 2025, 53(07): 2193-2200. DOI:10.12263/DZXB.20241175
信道编码参数的盲识别作为非合作通信和自适应调制编码(Adaptive Modulation and Coding, AMC)系统中的一项重要技术,近些年受到了更多关注.在第五代移动通信技术(5th Generation mobile networks, 5G)中,其采用了低密度奇偶检验(Low-Density Parity-Check, LDPC)码作为数据信道的前向纠错码,但其使用了删余和填充导致传统的盲识别技术不再适用.本文提出了一种新的方案,借鉴置信传播(Belief Propagation, BP)译码迭代思路来进行盲识别.该方案基于传统平均对数似然比(Log-Likelihood Ratio, LLR)算法,进一步采用BP译码的思想对删余和填充比特进行迭代,以解决传统算法无法识别这部分比特的问题.仿真结果表明:与现有的相关算法相比,本文算法具有更好的性能.
Blind recognition of channel coding parameters
as an essential technology in non-cooperative communication and adaptive modulation and coding (AMC) systems
has attracted increasing attention in recent years. In the 5th generation mobile networks (5G)
low-density parity-check (LDPC) codes are adopted as the forward error correction codes for data channels. However
due to the use of puncturing and padding
traditional blind recognition techniques are no longer applicable. We propose a novel scheme that leverages the belief propagation (BP) decoding iterative approach for blind recognition. Based on the conventional log-likelihood ratio (LLR) algorithm
this scheme incorporates the BP decoding concept to iteratively process punctured and padded bits
addressing the issue that traditional algorithms cannot recognize these bits. Simulation results demonstrate that the proposed algorithm outperforms existing related algorithms in terms of performance.
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