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多元LDPC码的速率兼容技术研究 被引量：6

On nonbinary rate-compatible LDPC codes
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摘要 提出了一种高性能的非规则比特级缩短算法,并推广了一种二元符号级打孔算法.该缩短算法基于有限域元素对应二进制镜像矩阵选择缩短比特的位置,比传统符号级缩短算法具有更大的灵活性和更佳的误码率性能;将二元符号级打孔算法推广到多元LDPC码,获得了比二元速率兼容LDPC(RC-LDPC)性能优异的多元RC-LDPC码.综合上述方法,实现了码率可从1/10到5/6灵活变化的多元RC-LDPC码.仿真结果证明,本方案的误码率性能比传统方法在各个码率分别有0.1到1.1 dB的增益. Two design methods for nonbinary rate-compatible LDPC（RC-LDPC） codes are proposed. And a novel irregular bit-wise shortening algorithm based on the algebraic properties of their binary images is proposed, with which we can obtain improved performance and extra flexibility; a symbol-wise puncturing algorithm for binary LDPC codes is extended to nonbinary LDPC codes. With these two algorithms, we obtain a family of nonbinary RC-LDPC codes with the code-rate range from 1/10 to 5/6. Simulation results demonstrate that gains of 0. 1 - 1.1 dB are obtained by proposed methods.
作者 周林 白宝明 邵军虎 林伟
机构地区 西安电子科技大学综合业务网理论及关键技术国家重点实验室
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2011年第1期147-152,共6页 Journal of Xidian University
基金 新一代宽带无线移动通信网重大专项资助项目(2009ZX03003-011) 长江学者和创新团队发展计划资助项目(IRT0852) 国家自然科学基金资助项目(60972046)
关键词 多元LDPC码 速率兼容 缩短算法 打孔算法 nonbinary LDPC codes rate-compatible shorten puncture
分类号 TN911.22 [电子电信—通信与信息系统]
  • 相关文献

参考文献16

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二级参考文献16

  • 1童胜,王鹏,王单,王新梅.LDPC码量化和积译码的高效实现[J].西安电子科技大学学报,2004,31(5):709-713. 被引量：13
  • 2王单,童胜,李颖,王新梅.LDPC码的快速收敛译码算法[J].西安电子科技大学学报,2005,32(1):103-107. 被引量：3
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共引文献14

同被引文献38

  • 1李丹,白宝明,孙蓉.多元LDPC码与二元LDPC码的性能比较[J].无线通信技术,2007,16(3):1-6. 被引量：10
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  • 5Zhou Lin, Bai Baoming, Xu Ming. Design of Nonlinary Rate-compatible LDPC Codes Utilizing Bit-wise Shortening Method [J].IEEE Communication Letters, 2010, 14(10): 963-965.
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  • 10Kou Y. , Lin S.,and Fossorier M. P. C. Low-densityparity-check codes based on finite geometries : A redis-covery and new results [J]. IEEE Trans. Inform. Theo-ry, 2001,47(7) :2711-2736.

引证文献6

二级引证文献20

西安电子科技大学学报
2011年 第1期

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