双时隙多用户线性网络编码协作的中断概率分析

Outage Probability of Two-Slots Multiuser Linear Network Coded Cooperation

线性网络编码协作(LNCC)是一种将线性网络编码与协作通信相结合的技术,能够提高频带利用率,降低中断概率.该文从理论上分析了双时隙M(M2)用户LNCC的紧近似中断概率,并通过Monte Carlo仿真验证了理论分析的正确性.同时,通过分析渐近中断概率,该文给出了双时隙M用户LNCC的分集阶数.为了说明线性网络编码为协作通信带来的额外增益,该文将双时隙M用户LNCC与分集阶数相同的传统M用户放大-转发协作系统进行了性能比较.结果发现,给定相同的有效频谱效率,前者的中断概率要显著低于后者.

Linear network coded cooperation（ LNCC） is a technology that integrates linear network coding into cooperative communication. It can improve the spectrum efficiency and decrease outage probability of data transmissions. In this paper,the outage probability of the two-slots LNCC with M（ M〉2） users is theoretically analyzed,tight approximated outage. Monte Carlo simulations are conducted to verify the theoretical analyses. Moreover,the asymptotic outage probability and the diversity order of two-slots M-users LNCC are also studied. In order to demonstrate the benefits introduced by linear network coding to cooperative communication,the performance comparison between the two-slots M-users LNCC and the traditional M-users Decode-and-Forward cooperation with the same diversity order is carried out. The results showthat given the same effective spectrum efficiency,the outage probability of two-slots M-users LNCC is greatly lower than that of the latter.