| 基于PEG算法的准循环LDPC码构造方法研究 |
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| 引用本文： | 刘星成,程浩辉.基于PEG算法的准循环LDPC码构造方法研究[J].电路与系统学报,2009,14(4). |
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| 作者姓名： | 刘星成 程浩辉 |
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| 作者单位： | 中山大学,信息科学与技术学院,电子与通信工程系,广东,广州,510275 |
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| 基金项目： | 国家自然科学基金项目，广东省科技计划项目 |
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| 摘 要： | PEG算法,即逐步边增长算法,是一种基于Tanner图构造LDPC码的方法,研究表明该方法构造的LDPC码具有优 异的纠错性能.在PEG算法的基础上,本文提出了一种准循环LDPC码的构造方法.仿真结果表明,所提出的方法构造的LDPC码与用原始PEG算法构造的随机LDPC码具有几乎相同的优异性能,而且由于准循环特性,用本文提出的方法编译码更简单,可以通过反馈移位寄存器来实现.此外,码率更易于调整.
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| 关 键 词： | 准循环LDPC码 PEG算法 围长 循环矩阵 |
Study on the Construction Method of Quasi-Cyclic LDPC Codes Based on Progressive Edge-Growth (PEG) Algorithm |
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| LIU Xing-cheng,CHENG Hao-hui.Study on the Construction Method of Quasi-Cyclic LDPC Codes Based on Progressive Edge-Growth (PEG) Algorithm[J].Journal of Circuits and Systems,2009,14(4). |
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| Authors: | LIU Xing-cheng CHENG Hao-hui |
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| Institution: | LIU Xing-cheng,CHENG Hao-hui(Department of Electronic , Communications Engineering,Sun Yat-sen University,Guangzhou 510275,China) |
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| Abstract: | Progressive Edge-Growth(PEG) algorithm is a method for constructing Low Density Parity-Check(LDPC) codes based on Tanner graph.Studies show that LDPC codes constructed with the algorithm can achieve excellent error-correcting performance.Based on the algorithm,the Quasi-Cyclic(QC) LDPC codes are proposed in this paper and simulations show that the QC-LDPC codes have almost the same excellent performance as the random codes constructed with the PEG algorithm.In addition,these codes have the property of quasi... |
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| Keywords: | Quasi-Cyclic LDPC codes PEG algorithm Girth Circulant matrices |
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