Secrecy outage analysis for underlay cognitive radio networks over correlated channels  

作　　者：Jiliang ZHANG Hui ZHAO Gaofeng PAN 

机构地区：[1]Chongqing Key Laboratory of Nonlinear Circuits and Intelligent Information Processing,School of Electronic and Information Engineering, Southwest University, Chongqing 400715, China

出　　处：《Science China(Information Sciences)》2017年第2期103-111,共9页中国科学（信息科学）（英文版）

基　　金：supported by National Natural Science Foundation of China (Grants Nos. 61401372, 61531016);Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20130182120017);Natural Science Foundation of CQ CSTC (Grant No. cstc2013jcyjA 40040);Fundamental Research Funds for the Central Universities (Grant Nos. XDJK2015B023, XDJK2016A011)

摘　　要：This paper investigates the secrecy outage performance of underlay cognitive radio networks, in which a source in a secondary system transmits its confidential information to a legitimate destination in the presence of an eavesdropper. Specifically, the main（the source-to-destination） and eavesdropping（the sourceto-eavesdropper） channels are assumed to be correlated. Moreover, it is also assumed that the main channel and the channel from the source to the primary user＇s receiver are correlated. Tight closed-form analytical expression for secrecy outage probability and the closed-form analytical expression for the probability of non-zero secrecy capacity are derived and validated by simulation results when the interference temperature limit is comparably large.This paper investigates the secrecy outage performance of underlay cognitive radio networks, in which a source in a secondary system transmits its confidential information to a legitimate destination in the presence of an eavesdropper. Specifically, the main（the source-to-destination） and eavesdropping（the sourceto-eavesdropper） channels are assumed to be correlated. Moreover, it is also assumed that the main channel and the channel from the source to the primary user＇s receiver are correlated. Tight closed-form analytical expression for secrecy outage probability and the closed-form analytical expression for the probability of non-zero secrecy capacity are derived and validated by simulation results when the interference temperature limit is comparably large.

关 键 词：cognitive radio networks correlated fading channels probability of non-zero secrecy capacity secrecy outage probability 

分 类 号：TN925[电子电信—通信与信息系统]