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基于循环差集的低密度奇偶校验码的构造

Construction of Low-density Parity-check Codes Based on Cyclic Difference Sets
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摘要 基于组合设计中的循环差集,提出一种构造准循环低密度校验(Quasi-Cyclic LDPC)码的方法。所构造的正则Quasi-Cyclic LDPC码的校验矩阵中不存在长度为4的环,并且可以用简单线性移位寄存器实现编码。仿真结果表明,在和积迭代译码下,采用该方法构造的码具有较好的性能。 This paper proposes a method to construct Quasi-Cyclic Low-Density Parity-Check(QC-LDPC) codes based on Cyclic Difference Sets(CDS) of combinatory. The constructed regular QC-LDPC codes are free of 4-cycles and with low complexity shift register encoding. Simulations results show that the constructed LDPC codes perform well under sum-product decoding algorithm.
出处 《计算机工程》 CAS CSCD 北大核心 2010年第11期247-249,共3页 Computer Engineering
基金 石河子大学高层次人才启动专项基金资助项目(RCX200742)
关键词 循环差集 准循环低密度奇偶校验码 和积译码 Cyclic Difference Sets(CDS) Quasi-Cyclic Low-Density Parity-Check(QC-LDPC) code sum-product decoding
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参考文献4

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