基于卷积码的协同中继编码性能分析  

Performance Analysis of Relay Coding Scheme Based on Convolutional Codes

作　　者：苏世彬[1] 高媛媛[2] 张亚军[1] 杨保峰[2] 江天明[3] 

机构地区：[1]解放军理工大学通信工程学院研究生1队,江苏南京210007 [2]解放军理工大学通信工程学院无线通信系 [3]解放军理工大学通信工程学院研究生3队

出　　处：《军事通信技术》2012年第2期36-40,56,共6页Journal of Military Communications Technology

摘　　要：中继协同可以有效提高通信性能,而中继编码可以进一步发挥其协同作用。文章研究卷积码在一源多中继协同通信系统中的应用。首先介绍基于卷积码的协同中继编码的一般构造方法;然后通过中断概率的性能指标从数学上证明平行信道编码相对于重复编码的好处,推导出二、三个中继的协同通信系统的中断概率表达式,并给出对应的具体实施方案;最后分别对系统的中断概率和误帧率进行仿真。结果表明,基于卷积码的平行信道编码策略不仅能够获得编码增益,同时也能获得分集增益。Relay cooperation can effectively improve communication performance, and coding at the relay can further its cooperation function. The application of the convolutional codes to one-source-multiple-relay cooperative communication system was investigated. A general method was presented to construct cooperative relay coding which is based on the convolutional codes, mathematically validate the advantage of the parallel channel codes over the repetition codes by the criterion of outage probability, and derive outage probability expression of two or three relays cooperative communication system and put up the corresponding implementation schemes. Final- ly, simulation about the system outage probability and flame error ratio was conducted. Results show that the convolutional-codes-based parallel channel codes achieve not only code gain but also diversity gain.

关 键 词：分集增益 中继编码 中断概率 误帧率 

分 类 号：TN914[电子电信—通信与信息系统]