On the Performance of Wireless-Powered Cooperative DF Relaying Networks with Imperfect CSI

作     者：Shuai Liu Zujun Liu Dechun Sun Hong Yang Kechu Yi Kan Wang 

作者机构：tate Key Laboratory of Integrated Services Networks Xidian University Xi'an 710071 China China Academy of Space Technology Beijing 100094 China Faculty of Computer Science and Engineering Xi'an University of Technology Xi'an 710048 China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2018年第15卷第11期

页      面：79-92页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 

基　　金：support by the National Natural Science Foundation of China (nos. 61571340, 61301170) the Fundamental Research Funds for the Central Universities of China under Grant JB150109 the 111 Project under Grant B08038 

主　　题：energy harvesting imperfectchannel state information time switching per-formance analysis 

摘      要：This paper studies several performance metrics of a wireless-powered decode-and-forward(DF) relay network with imperfect channel state information(CSI). In particular, based on the time switching(TS) protocol, the energy-constrained relay harvesting energy from a power beacon(PB), and uses that harvested energy to forward the source information to destination. The closedform expression of the outage probability is firstly derived over Rayleigh fading channels. Then, the asymptotic analysis, throughput as well as the symbol error probability(SEP) are derived based on the expression of the outage probability. Next, both transmission power of the source and the power beacon are optimized through the throughput optimization. Finally, simulations are conducted to corroborate our theoretical analysis, and to reveal the impact of the transmission power of the source and PB as well as the imperfect CSI on the system performance.