基于能量收集的协作中继传输性能  

Outage performance of multiuser transmission network with energy harvesting cooperative relay

作　　者：杜冠瑶[1,2] 熊轲[1] 裘正定[1] 

机构地区：[1]北京交通大学计算机与信息技术学院,北京100044 [2]中国科学院计算机网络信息中心,北京100190

出　　处：《吉林大学学报（工学版）》2015年第3期979-984,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(61201203);中央高校基本科研业务费项目(2014JBM024)

摘　　要：将协作中继技术与能量收集技术相结合,并将其运用到多用户传输系统中,研究了能量收集中继协作的多用户传输网络的中断性能。首先提出了一种基于能量分割接收机的能量收集多用户协作传输协议。然后分析了该协议在瑞利衰落信道下的中断概率性能。最后结合数值仿真与理论分析结果,进一步分析了源节点发送功率和中继位置对系统中断概率的影响。仿真结果表明:本文提出的能量收集多用户协作传输协议与传统的非协作传输协议相比,可以在不增加系统能耗的前提下提高系统的中断性能。此外,中继节点距离源节点较近时可以获得更低的系统中断概率。The outage performance of multiuser transmission network with an Energy Harvesting （EH） cooperative relay is investigated; where a source transmits independent information to multiple destinations with the help of energy constrained Amplify-and-Forward （AF） relay. The relay can harvest energy from the radio frequency signals transmitted from the source, and it helps the multiuser transmission only with the consumption of the harvested energy. First, an EH Cooperative （EHC） protocol is proposed on the basis of the power-splitting relay receiver architecture, which enables the simultaneous information processing and EH for the multiuser transmission system. Then, the outage performance is theoretically analyzed, and an explicit expression of the system outage probability is derived. Finally, the effects of the source power and relay location on the system performance are discussed. Numerical simulation results demonstrate the accuracy of the analytical results, and reveal that the proposed EHC protocol outperforms traditional non-cooperative scheme in term of outage probability. Besides, deploying the relay close to the source can obtain lower system outage probability.

关 键 词：通信技术 射频信号 能量收集 中断概率 放大转发 协作通信 

分 类 号：TN925[电子电信—通信与信息系统]