On Physical-Layer Security in Underlay Cognitive Radio Networks with Full-Duplex Wireless-Powered Secondary System

被引：56
作者：
Zhang, Jiliang [1 ]
Pan, Gaofeng [1 ]
Wang, Hui-Ming [2 ]
机构：
[1] Southwest Univ, Sch Elect & Informat Engn, Chongqing Key Lab Nonlinear Circuits & Intelligen, Chongqing 400715, Peoples R China
[2] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Minist Educ, Key Lab Intelligent Networks & Network Secur, Xian 710049, Peoples R China
来源：
IEEE ACCESS | 2016年 / 4卷
基金：
高等学校博士学科点专项科研基金; 美国国家科学基金会;
关键词：
Cognitive radio networks; full-duplex; simultaneous wireless information and power transfer; probability of strictly positive secrecy capacity; FADING CHANNELS; RELAY; COMMUNICATION; OPPORTUNITIES; INFORMATION; CHALLENGES;
D O I：
10.1109/ACCESS.2016.2591782
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 paper, we consider an underlay cognitive radio system, in which a source in a secondary system transmits information to a full-duplex (FD) wireless-powered destination node in the presence of an eavesdropper. In particular, the destination node is equipped with a single receiving antenna and a single transmitting antenna to enable FD operation. The receiving antenna can simultaneously receive information and energy from the source through power-splitter architecture. The received energy is then used in the transmitting antenna to send jamming signals to degrade the eavesdropper's decoding capacity. Upper and lower bounds of probability of strictly positive secrecy capacity (SPSC) have been derived. Numerical results show that under the condition that the interference from the source and destination at primary user's receiver is smaller than the interference temperature limit, upper and lower bounds merge together to become the exact SPSC.
引用
收藏
页码：3887 / 3893
页数：7
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