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一种基于均匀环路的LDPC码校验矩阵的构造方法 被引量:2

One Method for Check Matrix Construction of LDPC code Based on Cycle-Average
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摘要 LDPC码作为一种新的接近香农极限的信道编码方式,引起了广泛的注意。本文在总结出LDPC码校验矩阵的初等变换环路不变性和环路长度性质的基础上,提出了一种基于均匀环路的校验矩阵构造的新思路,而且还可以通过校验矩阵的矩阵初等变换得到其校验矩阵簇,在该簇中可以挑选编码复杂度低的LDPC码用在实际传输中。 As a new channel coding method near to Shannon limit, LDPC code causes general attention. This article presents a new method for check matrix construction based on cycle-average, which also gives invariability of elementary transformation and the property of cycle length. We can get the check matrix cluster through matrix elementary transformation, so the lower coding complexity and higher error-correction performance LDPC code can be selected from the check matrix cluster.
出处 《信号处理》 CSCD 北大核心 2007年第2期288-292,共5页 Journal of Signal Processing
关键词 LDPC码 均匀环路 校验矩阵簇 初等变换 环路不变 LDPC code cycle-average check matrix cluster elementary transformation cycle invariability
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参考文献13

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二级参考文献39

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共引文献43

同被引文献18

  • 1李会雅,王兰勋,师建英.消去短环的LDPC码校验矩阵的构造[J].信息技术,2005,29(11):127-128. 被引量:1
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  • 3马林华,常义林,王晟达.非规则LDPC码随机性结构的分布规律研究和在短环消除算法中的应用[J].中国科学(E辑),2007,37(4):589-594. 被引量:1
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