摘要
We consider a cooperative system consisting of a source node, a destination node, N （N 〉 1） wirelesspowered relays, and an eavesdropper. Each relay is assumed to be with a nonlinear energy harvester, in which there exists a saturation threshold, limiting the level of the harvested power. For decode-and-forward and power splitting protocols, the Kth best relay is selected to assist the source-relay-destination transmission. An analytical expression for the secrecy outage probability is derived, and also verified by simulation.
本文考虑了一个包含单一信源、单一信宿、N(N>1)个无线充电中继和单一窃听者的协作系统。本文假设每个中继都拥有一个非线性的能量收集器,且该能量收集器存在一个饱和阈值以限制收集能量的大小。在考虑解码转发和功率分配接收器的场景中,本文选择第K个最优中继来协助信源-中继-信宿链路的传输。同时,本文还推导了保密中断概率的解析表达式,并用通过仿真验证了分析结果。
基金
Project supported by tile National High-Tech R＆D Program （863） of China （No. 2015AA016304）, the National Natural Sci- ence Foundation of China （Nos. 61401372 and 61531016）, the Research Fund for the Doctoral Program of Higher Education of China （No. 20130182120017）, the Natural Science Foundation of CQ CSTC （Nos. cstc2013jeyjA40040 and cstc2016jcyjA2002）, the Postdoctoral Science Foundation of China （No. 2016M590875）, and the Fundamental Research Funds for the Central Uni- versities, China （Nos. XDJK2014A017, XDJK2015B023, and XDJK2016A011）
