电力线信道中极化码译码算法的改进  

Improvement of Polar Code Decoding Algorithm in Power Line Channel

作　　者：张京席[1] 鲁越 陈智雄[1] ZHANG Jingxi;LU Yue;CHEN Zhixiong(School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China)

机构地区：[1]华北电力大学电气与电子工程学院,河北省保定市071003

出　　处：《电力信息与通信技术》2024年第5期17-24,共8页Electric Power Information and Communication Technology

基　　金：国家自然科学基金青年基金资助项目(61601182);中央高校科研业务费专项资金资助项目(2023MS113)。

摘　　要：脉冲噪声是影响电力线通信性能的最主要因素。为了提升极化码在电力线信道的性能,文章提出了分段循环冗余校验码辅助串行抵消列表比特翻转(segmented CRC aid SCL-bit flip,SCA-SCL-BF)译码算法,并在加性高斯白噪声(additive white gaussian noise,AWGN)信道和电力线信道下进行了仿真。在构造关键集合时引入Rate1子块,避免了全集搜索的复杂度;根据关键集合中比特的位置进行分段,每段翻转一比特,可以实现多比特翻转。仿真结果表明,SCA-SCL-BF算法的性能相较于公开文献中性能在信噪比(signal-to-noiseratios,SNR)大于0dB时有显著提升。该算法对于提升电力线传输性能有重要意义。Pulse noise is the most primary factor that affects the performance of power line communication.In order to enhance the performance of polar codes in power line channels,this paper proposes a segmented CA-SCL bit-flipping decoding algorithm and makes simulations in both additive white gaussian noise and power line channels.In constructing the critical set,the algorithm introduces Rate1 sub-block to avoid the complexity of searching the entire set,and segmentation are conducted based on the positions of the bits in the critical set,and each segment flips one bit,achieving multi-bit flipping.Simulation results show that the performance of the SCA-SCL-BF algorithm outperforms that of existing literature significantly when signal-to-noise ratios>0dB.The algorithm has a great significance in improving power line transmission.

关 键 词：电力线通信 MCAN模型 极化码 Rate1子块 分段译码 

分 类 号：TN929.5[电子电信—通信与信息系统]