窃听
继电器
干扰
计算机科学
认知无线电
保密
计算机网络
选择(遗传算法)
中继信道
计算机安全
电信
无线
功率(物理)
人工智能
物理
热力学
量子力学
作者
Yuanwei Liu,Lifeng Wang,Tran Trung Duy,Maged Elkashlan,Trung Q. Duong
出处
期刊:IEEE Wireless Communications Letters
[Institute of Electrical and Electronics Engineers]
日期:2015-02-01
卷期号:4 (1): 46-49
被引量:192
标识
DOI:10.1109/lwc.2014.2365808
摘要
This letter proposes several relay selection policies for secure communication in cognitive decode-and-forward relay networks, where a pair of cognitive relays is opportunistically selected for security protection against eavesdropping. The first relay transmits the secrecy information to the destination, and the second relay, as a friendly jammer, transmits the jamming signal to confound the eavesdropper. We present new exact closed-form expressions for the secrecy outage probability. Our analysis and simulation results strongly support our conclusion that the proposed relay selection policies can enhance the performance of secure cognitive radio. We also confirm that the error floor phenomenon is created in the absence of jamming.
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