一种有效的卷积码与物理层网络编码联合译码算法  

An Effective Joint Decoding Algorithm of Convolutional-Coded Physical-Layer Network Coding

作　　者：陆鸣越 郭道省[1] 牛和昊[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《通信技术》2017年第3期400-405,共6页Communications Technology

摘　　要：信道编码与高阶调制的结合,可以提高双向中继物理层网络编码(Physical Layer Network Coding,PLNC)通信系统的可靠性和有效性。研究高阶调制下卷积码与PLNC的联合译码算法,通过将Viterbi译码算法与高阶调制信号结合,分别提出全状态译码算法和删减状态译码算法,即利用卷积码网格图中的全部路径和部分路径进行译码。两种算法可以有效进行译码运算,尤其是删减状态译码算法,具有复杂度低的优点。仿真结果表明,所提出的算法误码率性能改善显著,并且大幅降低了运算复杂度。The combination of channel coding and high-order modulation can improve the reliability and efficiency of the physical-layer network coding based two-way relay system. This paper discusses the joint decoding algorithm for high-order modulation based convolutional code PLNC. Particularly, by combining Viterbi decoding algorithm with high-order modulation, the full-state and the reduced-state decoding algorithms are proposed respectively. Both algorithms can effectively implement decoding operation, and the reduced-state decoding algorithm, in particular, has low complexity. Simulation result indicate that the advanced performance of the proposed algorithms.

关 键 词：物理层网络编码 卷积码 维特比译码 删减状态译码 

分 类 号：TN911.2[电子电信—通信与信息系统]