机会式网络编码的系统中断性能  

Performance of System Outage Based on Opportunistic Network Coding

作　　者：李世唐[1,2] 郑宝玉[1] 黄川[1,2] 崔景伍[1] 

机构地区：[1]南京邮电大学信号处理与传输研究院,南京210003 [2]福建师范大学数学与计算机科学学院,福州350007

出　　处：《电子与信息学报》2009年第9期2242-2246,共5页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60372107);江苏省自然科学基金重大项目(BK2007729);江苏省高校自然科学基金重大项目(06KJ510001)资助课题

摘　　要：该文在两用户通过一个中继节点的协作向基站传送数据的无线通信环境下,研究了基于网络编码的中继策略。与通常的"用户到中继的信道是可靠的"这一假设不同,该文假设所有的信道都存在衰落现象,比较了复制重传中继策略、确定性网络编码策略和机会式网络编码策略对系统中断概率的影响。仿真结果说明了机会式网络编码中继策略具有较好的性能。This paper investigates the strategies of relaying based on network coding over wireless communication context with two users and one relay sending data to the base station. Differing from the assumption that the channels from users to relay are reliable, this paper supposes that all channels exit fading phenomenon. The effects on probability of system outage are compared among store-and-forwarding, deterministic network coding and opportunistic network coding. Results of numerical analysis indicate that opportunistic network coding is better than deterministic network coding.

关 键 词：网络编码 中继 系统中断概率 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]