Secrecy Outage Probability Analysis for Full-Duplex Relaying Networks Based on Relay Selection Schemes

被引：6

作者：

Ding, Qingfeng ^{[1
]}

Liu, Mengxia ^{[1
]}

Deng, Yuqian ^{[1
]}

机构：

[1] East China Jiaotong Univ, Coll Elect & Automat Engn, Nanchang 330013, Jiangxi, Peoples R China

来源：

IEEE ACCESS | 2019年 / 7卷

基金：

中国国家自然科学基金;

关键词：

Relay selection; full-duplex; imperfect CSI; decode-and-forward; secrecy outage probability; PHYSICAL-LAYER SECURITY; PERFORMANCE; DESIGN;

D O I：

10.1109/ACCESS.2019.2932135

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Considering existing eavesdroppers, this paper analyzes the secrecy outage probability (SOP) of the full-duplex (FD) relaying network with imperfect channel state information (CSI), where the decode-and-forward relay protocol is adopted. To enhance the physical-layer security, two relay selection schemes are proposed. The first scheme uses the maximum-minimum principle to select the optimal relay. The other selection scheme is based on partial signal-to-interference-plus-noise ratio. Then, the tight closed-form approximations of the SOP are obtained for three special CSI cases, respectively. Moreover, based on these approximated results, the effects of some system parameters are analyzed for the SOP of the relay system, including the CSI error, the number of relays, the signal-to-noise ratio (SNR) of the eavesdropper, and the residual self-interference caused by the FD model. The numerical results show that at low SNR of the eavesdropper, residual self-interference has a significantly impact on SOP, while at high SNR of the eavesdropper, this effect is negligible. In addition, the SOP of FD model is always superior to the half-duplex (HD) model when the number of relays changes.

引用

页码：105987 / 105995

页数：9