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Frontiers of Information Technology & Electronic Engineering

ISSN 2095-9184 (print), ISSN 2095-9230 (online)

2017 Vol.18 No.2 P.246-252

Secrecy outage performance for wireless-powered relaying systems with nonlinear energy harvesters

Ji-liang Zhang, Gao-feng Pan, Yi-yuan Xie

Chongqing Key Laboratory of Nonlinear Circuits and Intelligent Information Processing, School of Electronic and Information Engineering, Southwest University, Chongqing 400715, China

gfpan@swu.edu.cn

Abstract: We consider a cooperative system consisting of a source node, a destination node, N (N>1) wireless-powered 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.

Key words: Decode-and-forward, Energy harvesting, Nonlinear, Secrecy outage probability

Chinese Summary  <18> 基于非线性能量收集器的无线充电中继系统保密中断性能分析

概要：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，并通过仿真验证了分析结果。

关键词组：解码转发；能量收集；非线性；保密中断概率


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DOI:

10.1631/FITEE.1601352

CLC number:

TN929.5

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On-line Access:

2017-02-10

Received:

2016-06-19

Revision Accepted:

2016-08-07

Crosschecked:

2016-12-13

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