| 联合LDPC码和网络编码的协作通信技术 |
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| 引用本文： | 朱联祥,行彦辉,李祥,代改荣,王朝璋. 联合LDPC码和网络编码的协作通信技术[J]. 重庆邮电学院学报(自然科学版), 2011, 0(3) |
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| 作者姓名： | 朱联祥 行彦辉 李祥 代改荣 王朝璋 |
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| 作者单位： | 重庆邮电大学信号与信息处理重庆市重点实验室; |
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| 基金项目： | 信号与信息处理重庆市市级重点实验室建设项目(CSTC,2009CA2003); 重庆市科委自然科学基金项目(2008BB2087); 重庆市教委自然科学基金项目(KJ080502)~~ |
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| 摘 要： | 结合信道编码和网络编码的思想,提出了一种在两用户协作情况下联合LDPC(low-density parity-check)码和网络编码的协作分集方案,该方案在接收端通过基于整体H矩阵的置信传播算法实现LDPC码和网络编码的联合译码,并对该方案在瑞利慢衰落信道下的性能进行了MATLAB仿真。仿真结果表明:与编码协作和不协作方案相比,所提方案在系统误码率性能上有着明显地改善。
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| 关 键 词： | 网络编码 协作分集 低密度校验码(LDPC) 联合译码 |
Joint LDPC codes and network coding cooperative communication technology |
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| ZHU Lian-xiang,XING Yan-hui,LI Xiang,DAI Gai-rong,WANG Zhao-zhang ,Chongqing University of Posts , Telecommunications,Chongqing,China). Joint LDPC codes and network coding cooperative communication technology[J]. Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition), 2011, 0(3) |
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| Authors: | ZHU Lian-xiang XING Yan-hui LI Xiang DAI Gai-rong WANG Zhao-zhang Chongqing University of Posts Telecommunications Chongqing China) |
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| Affiliation: | ZHU Lian-xiang,XING Yan-hui,LI Xiang,DAI Gai-rong,WANG Zhao-zhang (Chongqing Key Laboratory of Signal and Information Processing(CQKLS&IP),Chongqing University of Posts and Telecommunications,Chongqing,400065,China) |
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| Abstract: | Combining the idea of channel coding and network coding,a joint LDPC codes and network coding cooperative diversity scheme in the scenarios of two-user collaboration is proposed in this paper.The joint decoding of LDPC codes and network coding is implemented by using belief propagation algorithm on its overall H matrix in the receiver.The bit error rate performance of the system in Rayleigh slow fading channel was verified through MATLAB simulation,which shows a significant improvement of the proposed schem... |
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| Keywords: | network coding cooperative diversity low-density parity-check(LDPC) codes joint decoding |
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