| 码率自适应QC-LDPC码的研究 |
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| 引用本文： | 胡文江,卫霞.码率自适应QC-LDPC码的研究[J].重庆邮电学院学报(自然科学版),2009(1). |
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| 作者姓名： | 胡文江 卫霞 |
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| 作者单位： | 重庆邮电大学编码技术研究所; |
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| 基金项目： | 重庆市科委自然科学基金(CSTC,2007BB2387) |
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| 摘 要： | 采用码率自适应分割和部分行合并2种方法来构造码率自适应准循环低密度奇偶校验(QC-LDPC)码,将一定码率的QC-LDPC码作为母码,得到一系列不同码率的子码。仿真结果表明,2种方法构造的码率自适应QC-LDPC码均表现出良好的性能,与基于有限几何直接构造出来的单个码率QC-LDPC;码相比,性能并没有损失。
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| 关 键 词： | 码率自适应QC-LDPC 码率自适应分割 部分行合并法 |
Design of rate-compatible QC-LDPC codes |
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| HU Wen-jiang,WEI Xia.Design of rate-compatible QC-LDPC codes[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2009(1). |
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| Authors: | HU Wen-jiang WEI Xia |
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| Institution: | Institute of Coding and Information Technology;Chongqing University of Posts and Telecommunications;Chongqing 400065;P.R.China |
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| Abstract: | Rate-compatible quasi-cyclic low-density parity-check(QC-LDPC)codes were designed with two construction methods.The first technique is based on code division,where a high-rate mother code is progressively divided into lower and lower rates;the other one adopts fractional row combination to yield a range of higher and higher rates form a relative low-rate mother code.The two methods cover different ranges of rates.Simulation result shows that the performance of these constructed rate-compatible QC-LDPC codes... |
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| Keywords: | rate compatible QC-LDPC rate-compatible code-division fractional-row-combination |
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