采用TAS/MRC技术的能量收集全双工中继网络中断概率分析

摘要

针对多天线双跳全双工放大转发(Amplify-and-Forward,AF)中继网络,研究在中继节点能量受限情况下的系统端到端中断概率性能.假设信道是独立同分布的瑞利衰落信道,采用传输天线选择(Transmit Antenna Selection,TAS)与最大比合并(Maximal-Ratio Combining,MRC)两种天线选择技术,且源节点和目的节点均为多天线,同时中继节点通过收集源节点提供的能量来完成对源节点信息的转发.整个通信过程分为两阶段——能量收集阶段与信息传输阶段,即采用的是时域分割方案.通过推导,得到了中断概率的闭式表达式和边界表达式,并利用蒙特卡洛仿真验证了理论分析的正确性.%In this paper,we investigate of Aiming at dual hop full-duplex amplify-and-forward(AF) relay network,the end-to-end outage probability performance of the system with the energy-constrained relay over independent identically distributed Rayleigh fading channels is disscused.In this system,the source and destination are equipped with multiple antennas,and the transmit antenna selection(TAS) and maximalratio combining(MRC) techniques also adopted.At the same time,the relay forwards the source information with the energy harvested from source.The total communication involves two phases,i.e.,energy harvesting and information transmission,this means that the time-switching architecture is adopted.Moreover,the derivation finally results in the exact expression and the lower bound of the outage probability,and the Monte-Carlo simulation indicates correctness of the theoretical analysis.