Physical-layer secrecy outage of spectrum sharing CR systems over fading channels  

作　　者：Hequn LIU Hui ZHAO Hong JIANG Chaoqing TANG Gaofeng PAN Tingting LI Yunfei CHEN 

机构地区：[1]Chongqing Key Laboratory of Nonlinear Circuits and Intelligent Information Processing,Southwest University [2]School of Mathematics and Statistics, Southwest University [3]School of Engineering, University of Warwick

出　　处：《Science China(Information Sciences)》2016年第10期108-116,共9页中国科学（信息科学）（英文版）

基　　金：supported in part by National Natural Science Foundation of China (Grant Nos. 61401372, 61531016);Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20130182120017);Natural Science Foundation Project of CQ CSTC (Grant No. cstc2013jcyjA 40040);Fundamental Research Funds for the Central Universities (Grant No. XDJK2015B023);National Undergraduate Training Programs for Innovation and Entrepreneurship (Grant No. 201410635005)

摘　　要：In this paper, we investigate the physical-layer secrecy outage performance of underlay spectrum sharing systems over Rayleigh and log-normal fading channels in the presence of one eavesdropper. In partic- ular, the secondary transmitter sends data to the legitimate receiver under the constraints of the interference temperature at the primary receiver, while suffering the wiretap from the eavesdropper. Closed-form and approx- imated expressions are derived for the secrecy outage probability over l^ayleigh and log-normal fading channels, respectively. The accuracy of our performance analysis is verified by simulation results.In this paper, we investigate the physical-layer secrecy outage performance of underlay spectrum sharing systems over Rayleigh and log-normal fading channels in the presence of one eavesdropper. In partic- ular, the secondary transmitter sends data to the legitimate receiver under the constraints of the interference temperature at the primary receiver, while suffering the wiretap from the eavesdropper. Closed-form and approx- imated expressions are derived for the secrecy outage probability over l^ayleigh and log-normal fading channels, respectively. The accuracy of our performance analysis is verified by simulation results.

关 键 词：spectrum sharing cognitive radio secrecy outage probability Rayleigh fading channels log-normalfading channels 

分 类 号：TN92[电子电信—通信与信息系统]