多播中基于网络编码的协同ARQ协议分析  

Analysis of Cooperative ARQ Protocol Based on Network Coding in Multicast

作　　者：颜伟[1] 蔡跃明 陈华梁[3] 

机构地区：[1]解放军理工大学通信工程学院研究生4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,江苏南京210007 [3]解放军理工大学通信工程学院研究生1队,江苏南京210007

出　　处：《军事通信技术》2010年第3期1-5,10,共6页Journal of Military Communications Technology

基　　金：国家自然科学基金资助项目(60972051);国家科技重大专项资助项目(2010ZX03006-002-04);国家高技术研究发展计划(863计划)资助项目(2009AA01Z235)

摘　　要：为了进一步提高多播中基于网络编码的ARQ协议的吞吐量效率,结合网络编码和协同通信两种技术的优势,文中对基于网络编码的协同ARQ协议进行了研究。在数据包数量很大时,推导了该协议的吞吐量效率简化表达式。仿真结果表明,基于网络编码的协同ARQ协议可以带来明显的吞吐量增益。针对丢失的包进行网络编码的合并问题,提出了一种适用于多个目的节点的一般合并包算法。To further improve the throughput efficiency of ARQ protocol based on network coding in wireless multicast,cooperative ARQ protocol based on network coding was investigated.It can take full advantage of both cooperative communication and network coding techniques.A simple expression of its throughput efficiency was presented in the case of large number of packets.Numerical results demonstrate that it can bring significant throughput gain.Moreover, to solve the combination problem of the lost packet using network coding,a generic combination algorithm was provided for a multiple-destination scenario.

关 键 词：多播 自动请求重传 网络编码 协同通信 

分 类 号：TN92[电子电信—通信与信息系统]