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一种改进的PS-LDPC码构造法

An Improved algorithm for constructing PS-LDPC codes
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摘要 为提高校验矩阵的构造效率,对子矩阵的移位系数的选择提出了合理的理论准则,并提供了一种直观且合理的寻找矩阵中闭合环路的方法以简化构造过程.以AWGN信道仿真考察了采用这种改进方法构造的PS-LDPC码的译码性能.仿真结果证明采用此改进算法构造的PS-LDPC码具有更优的BER性能. Partition-and-Shift codes have been paid much attention in the area of error correction in telecommunication system, because of its ideal girth and rain-distance property. An Improved algorithm for constructing PS-LDPC codes is presented to improve constructing efficiency, by employing a precise criterion for choosing the shift parameters in shift matrix and a perspicuous and reasonable method to search for closed paths simply. Finally, the improved PS - LDPC codes are simulated over AWGN channel and a better BER performance is obtained.
作者 刘宁庆 王焜 孙浩伟
机构地区 哈尔滨工业大学通信技术研究所 中国海军驻哈尔滨地区舰船配套军事代表室
出处 《哈尔滨工业大学学报》 EI CAS CSCD 北大核心 2011年第3期29-32,共4页 Journal of Harbin Institute of Technology
关键词 PS—LDPC码 移位矩阵 周长 最小距离 闭合环路 Partition-and-Shift codes shift matrix girth rain-distance closed path
分类号 TN911 [电子电信—通信与信息系统]
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哈尔滨工业大学学报
2011年 第3期

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