An Adaptive Transmission Scheme in Cooperative Relay Networks with Energy Accumulation  

作　　者：TANG Kun SHI Ronghua GUO Yabo SHI Heyuan DONG Jian 

机构地区：[1]School of Information Science and Engineering,Central South University [2]School of Insurance and Economics,University of International Business and Economics [3]School of Software,Tsinghua University

出　　处：《Chinese Journal of Electronics》2019年第1期152-161,共10页电子学报（英文版）

基　　金：supported by the National Science Foundation of China(No.61201086)

摘　　要：We investigate a wireless-powered cooperative relay network, where an energy constrained relay node accumulates the energy harvested from radio frequency signals, and then assists source signal transmission. An adaptive cooperative transmission scheme for cooperative relay network is developed. The relay helps to transmit the source signal only if it has harvested enough energy and the channels between source and relay do not suffer from an outage. Before each transmission block, one out of two transmission modes, i.e., Half-duplex(HD) or Full-duplex(FD), is dynamically adopted based on the maximal instantaneous capacity of the system. A closed-form expression for the exact outage probability of the system with the proposed scheme is derived. Monte Carlo simulations are run to validate the accuracy of the mathematical analysis, and numerical results show that the proposed protocol outperforms the existing fixed cooperative transmission modes.We investigate a wireless-powered cooperative relay network, where an energy constrained relay node accumulates the energy harvested from radio frequency signals, and then assists source signal transmission. An adaptive cooperative transmission scheme for cooperative relay network is developed. The relay helps to transmit the source signal only if it has harvested enough energy and the channels between source and relay do not suffer from an outage. Before each transmission block, one out of two transmission modes, i.e., Half-duplex(HD) or Full-duplex(FD), is dynamically adopted based on the maximal instantaneous capacity of the system. A closed-form expression for the exact outage probability of the system with the proposed scheme is derived. Monte Carlo simulations are run to validate the accuracy of the mathematical analysis, and numerical results show that the proposed protocol outperforms the existing fixed cooperative transmission modes.

关 键 词：Cooperative RELAY networks Wireless energy HARVESTING Full-duplex RELAYING HALF-DUPLEX RELAYING OUTAGE PROBABILITY 

分 类 号：TN[电子电信]