基于极化码的短波信令传输设计与仿真  

Design and simulation of HF signaling transmission based on polar codes

作　　者：纪译航 程云鹏 孔维凡 JI Yihang;CHENG Yunpeng;KONG Weifan(Institute of Communication Engineering,Army Engineering University,Nanjing 210007,China)

机构地区：[1]陆军工程大学通信工程学院,江苏南京210007

出　　处：《航天工程大学学报》2024年第1期132-137,共6页

摘　　要：针对短波通信中信令可靠传输要求,设计了一种基于极化码的短波信令传输方法。给出了发送接收总体结构,对短码长极化码构造、编码及正交扩频调制进行阐述,设计了多径分集合并下的比特软值解调算法,讨论了串行抵消(SC)和串行抵消列表(SCL)译码算法步骤,对高斯白噪声信道(AWGN)和多径衰落信道下的传输性能进行了仿真。结果表明,极化码纠错能力良好,2种信道下SCL算法分别优于SC算法约0.25 dB和0.5 dB,传输性能优于3G-ALE超过2 dB,实现了低信噪比下的短波信令可靠传输。Aiming at the requirement of reliable signaling transmission of high frequency(HF)communication,a signaling transmission method based on polar code is designed in this paper.Firstly,the overall structure of transmission and reception is presented,and the construction,encoding of short code length polar codes and orthogonal spread spectrum modulation are described.Then,a soft value demodulation method under multi-path diversity is designed,and the decoding algorithms of successive cancellation(SC),successive cancellation list(SCL)are discussed.Finally,the transmission performance under additive white Gaussian noise(AWGN)and multi-path fading channels is simulated.The results show that the polar code exhibits good error correction ability,with SCL algorithm outperforming SC algorithms by approximately 0.25 dB and 0.5 dB under two kinds of channels respectively.The performance is over 2 dB better than that of 3G-ALE.The method realizes reliable transmission of HF signaling under low SNR.

关 键 词：短波通信 极化码 信道编译码 串行抵消算法 

分 类 号：TN924.2[电子电信—通信与信息系统]