RA码与网络编码的联合设计  

Joint Design Scheme of RA Code and Network Coding

作　　者：妙琳 彭亚雄 陆安江 MIAO Lin;PENG Yaxiong;LU Anjiang(School of Big Data and Information Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学大数据与信息工程学院,贵州贵阳550025

出　　处：《电子科技》2020年第10期40-44,共5页Electronic Science and Technology

基　　金：贵州省科技成果转化项目([2017]4856)。

摘　　要：针对现有编码技术存在的编译码系统结构复杂、网络传输性能稳定性差等问题,文中提出了一种RA码与网络编码的联合设计方法。RA码融合了Turbo码编码和LDPC码译码各自的优点,采用RA码的BP译码算法,通过将RA码的译码器加入到PNC的信息计算流程中,将基于RA码的信道编码与PNC进行结合。最后,在MATLAB平台上进行仿真,基于AWGN信道获取SNR/BER性能曲线图。仿真结果显示,该方案有效简化了系统结构,降低了系统的信噪比和延迟性,提高了传输性能的稳定性。In view of the problems of complex structure of coding and decoding system and poor stability of network transmission in existing coding technology,a joint design method of RA code and network coding is proposed.RA code combines the advantages of Turbo code and LDPC code.The BP decoding algorithm of RA code is adopted in this study.By adding the decoder of RA code into the information calculation process of PNC,the channel coding based on RA code is combined with PNC.Finally,the simulation is carried out by MATLAB platform.Based on AWGN channel,the SNR/BER performance curve is obtained.The simulation results show that the scheme effectively simplifies the system structure,reduces the signal-to-noise ratio and delay of the system,and improves the stability of transmission performance.

关 键 词：RA码 信道编码 物理层网络编码 后验概率向量 RA译码器 BP算法 

分 类 号：TN911[电子电信—通信与信息系统]