Relay Selection for Improved Security in Cognitive Relay Networks With Jamming

被引：35

作者：

Jia, Shaobo ^{[1
]}

Zhang, Jiayan ^{[1
]}

Zhao, Honglin ^{[1
]}

Zhang, Ruoyu ^{[1
]}

机构：

[1] Harbin Inst Technol, Commun Res Ctr, Harbin 150001, Heilongjiang, Peoples R China

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2017年 / 6卷 / 05期

关键词：

Physical layer security; underlay cognitive radio network; jamming; secrecy outage probability; SECRECY;

D O I：

10.1109/LWC.2017.2728528

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this letter, we consider an underlay cognitive radio network in which a secondary transmitter (ST) communicates with a secondary destination (SD) with the aid of multiple cognitive relays, and multiple colluding eavesdroppers attempt to intercept the secondary transmission. Assuming that there is no ST-SD link, one of the cognitive relays is selected to convey the confidential information, while the others cooperate in jamming the eavesdroppers by transmitting artificial noise. Since the eavesdroppers' channel information state is considered to be absent, two opportunistic relay selection schemes are proposed to enhance the security of the system. We derive novel closed-form expressions for the secrecy outage probability. Simulation results are presented to validate our analysis.

引用

页码：662 / 665

页数：4

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