基于正交处理的网络编码方法及其性能分析  

Performance analysis of a network coding scheme based on orthogonal process

作　　者：张祖凡[1,2] 彭醇陵[1] 杨静[1] 景小荣[1,2] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]重庆邮电大学移动通信技术重庆市重点实验室,重庆400065

出　　处：《通信学报》2014年第6期8-14,共7页Journal on Communications

基　　金：国家重大科学仪器设备开发专项(2012YQ20022404);重庆市自然科学基金资助项目(cstc2013jjB40001&CSTCjjA40014);长江学者和创新团队发展计划基金资助项目(IRT1299)~~

摘　　要：为有效传输多用户多中继网络信息,在线性网络编码的基础上给出一种基于正交处理的网络编码方法(NCOP,network coding based on orthogonal process),该编码方式结合正交低频子载波处理思想,将传输数据正交化,利用处理后数据正交性实时传输并解码需要用户数据,进一步降低系统中断概率,提高分集增益。理论分析了该编码方法的系统中断概率和平均误码率,分析和仿真结果表明在多用户协作网络的应用中,NCOP中断性能及误码性能均优于线性网络编码。Combining the orthogonal low-frequency subcarrier processing, a network coding scheme based on orthogonal process （NCOP） was proposed for effective transmission in multi-user multi-relay networks. It makes the data orthogonal before transmission, and decodes the data utilizing the characteristics of orthogonality, so that further reduces the system outage probability and develops the diversity order. The system outage performance and average bit error rate was ana- lyzed by theoretical analysis. Analysis and simulation results show that the system performance of the proposed NCOP outperforms linear network coding while applying in multi-user cooperative networks.

关 键 词：多用户多中继协作网络 正交处理 网络编码 中断概率 平均误码率 

分 类 号：TN925[电子电信—通信与信息系统]