| 具有完全线性编码复杂度的QC-LDPC码的构造方法及短环优化算法 |
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| 引用本文： | 张嵩,马林华,唐红,田雨,查翔.具有完全线性编码复杂度的QC-LDPC码的构造方法及短环优化算法[J].吉林大学学报(工学版),2013,43(3):824-829. |
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| 作者姓名： | 张嵩 马林华 唐红 田雨 查翔 |
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| 作者单位： | 空军工程大学航空航天工程学院,西安,710038 |
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| 基金项目： | 陕西省电子信息系统综合集成重点实验室重点基金项目，陕西省电子信息系统综合集成重点实验室基金项目 |
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| 摘 要： | 为了降低低密度奇偶校验(Low-density parity-check,LDPC)码编码实现的复杂度,提出了一种完全线性编码复杂度的准循环低密度奇偶校验(Quasi-cyclic low-density parity-check,QC-LDPC)码的构造方法,并提出了相应的短环优化算法。通过该短环优化算法,可以使得构造的QC-LDPC码具有良好的环路特性。仿真结果表明:在加性高斯白噪声(Additivewhite gaussian noise,AWGN)信道条件下,本文构造的QC-LDPC码与IEEE 802.16e标准的QC-LDPC码相比,不仅编码复杂度更低,而且性能更优。
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| 关 键 词： | 通信技术 准循环低密度奇偶校验码 短环优化算法 线性编码复杂度 |
Construction of QC-LDPC codes with total linear encoding complexity and eliminating short cycles |
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| ZHANG Song,MA Lin-hua,TANG Hong,TIAN Yu,ZHA Xiang.Construction of QC-LDPC codes with total linear encoding complexity and eliminating short cycles[J].Journal of Jilin University:Eng and Technol Ed,2013,43(3):824-829. |
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| Authors: | ZHANG Song MA Lin-hua TANG Hong TIAN Yu ZHA Xiang |
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| Affiliation: | (College of Aeronautics and Astronautics Engineering,Air Force Engineering University,Xi′an 710038,China) |
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| Abstract: | In order to reduce the encoding complexity of Low-Density Parity Check(LDPC) codes,a method of constructing Quasi-Cyclic LDPC(QC-LDPC) codes with total linear encoding complexity and a short-cycle optimization algorithm for eliminating short cycles were proposed.Based on the short-cycle optimization algorithm,the constructed QC-LDPC codes can achieve good cycle distribution.Simulation was carried out under the Additive White Gaussian Noise(AWGN) channel.The simulation results show that the proposed QC-LDPC codes outperform the IEEE802.16e standard QC-LDPC codes in both error performance and encoding complexity. |
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| Keywords: | communication quasi-cyclic low-density parity-check(QC-LDPC) short-cycle optimization algorithm linear encoding complexity |
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