无线协作通信中的网络编码—增量中继机制  

Network coding-incremental relay mechanism in wireless cooperative communication system

作　　者：孙文胜[1] 陈安辉[1] 

机构地区：[1]杭州电子科技大学通信工程学院,杭州310018

出　　处：《计算机应用》2011年第12期3191-3194,共4页journal of Computer Applications

摘　　要：针对以往的网络编码应用于无线通信系统中都是采用固定的中继转发方式,提出了一种新的协作机制:网络编码—增量中继。该方案的中继节点根据两用户直传路径的发送情况来决定是否需要转发:即当两用户发送数据的直传路径都成功或都发送失败时,中继节点不转发数据;当两用户发送数据的直传路径有一个成功、一个失败时,中继节点转发经过网络编码后的数据。经过仿真表明,采用该协作机制,在不影响系统性能的情况下大大节约了时隙、功率、带宽资源。The existing network coding applied to wireless communication system uses a fixed way to relay.Therefore,a new cooperation mechanism was proposed： Network Coding-Incremental Relay（NC-IR）.The relay node decided whether to forward according to the two users＇ sending status of the direct passing path.That is,if both of the direct passing paths or neither of them were successful while sending users＇ data,the relay node did not forward data,and if only one of the direct passing path were successful while sending users＇ data,the relaying node forwarded the data by network coding.The simulation shows that this cooperation mechanism saves a lot of time slot,power and bandwidth resources without affecting the system performance.

关 键 词：协作通信 网络编码 增量中继 中断概率 资源消耗 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]