Secrecy Outage and Diversity Analysis of Cognitive Radio Systems

CORC > 西安光学精密机械研究所 > 中国科学院西安光学精密机械研究所 > 光学影像学习与分析中心

	Secrecy Outage and Diversity Analysis of Cognitive Radio Systems
	Zou, Yulong 1; Li, Xuelong2 ; Liang, Ying-Chang 3,4
刊名	ieee journal on selected areas in communications
	2014-11-01
卷号	32 期号:11 页码:2222-2236
关键词	Cognitive radio multi-user scheduling secrecy outage probability secrecy diversity diversity order
ISSN号	0733-8716
产权排序	2
合作状况	国际
英文摘要	in this paper, we investigate the physical-layer security of a multi-user multi-eavesdropper cognitive radio system, which is composed of multiple cognitive users (cus) transmitting to a common cognitive base station (cbs), while multiple eavesdroppers may collaborate with each other or perform independently in intercepting the cus-cbs transmissions, which are called the coordinated and uncoordinated eavesdroppers, respectively. considering multiple cus available, we propose the round-robin scheduling as well as the optimal and suboptimal user scheduling schemes for improving the security of cus-cbs transmissions against eavesdropping attacks. specifically, the optimal user scheduling is designed by assuming that the channel state information (csi) of all links from cus to cbs, to primary user (pu) and to eavesdroppers are available. by contrast, the suboptimal user scheduling only requires the csi of cus-cbs links without the pu's and eavesdroppers' csi. we derive closed-form expressions of the secrecy outage probability of these three scheduling schemes in the presence of the coordinated and uncoordinated eavesdroppers. we also carry out the secrecy diversity analysis and show that the round-robin scheduling achieves the diversity order of only one, whereas the optimal and suboptimal scheduling schemes obtain the full secrecy diversity, no matter whether the eavesdroppers collaborate or not. in addition, numerical secrecy outage results demonstrate that for both the coordinated and uncoordinated eavesdroppers, the optimal user scheduling achieves the best security performance and the round-robin scheduling performs the worst. finally, upon increasing the number of cus, the secrecy outage probabilities of the optimal and suboptimal user scheduling schemes both improve significantly.
WOS标题词	science & technology ; technology
类目[WOS]	engineering, electrical & electronic ; telecommunications
研究领域[WOS]	engineering ; telecommunications
关键词[WOS]	physical-layer security ; wire-tap channel ; artificial-noise ; networks ; transmissions ; tradeoff
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000348856700020
公开日期	2015-03-20
内容类型	期刊论文
源URL	[http://ir.opt.ac.cn/handle/181661/22434]
专题	西安光学精密机械研究所_光学影像学习与分析中心
作者单位	1.Nanjing Univ Posts & Telecommun, Sch Telecommun & Informat Engn, Nanjing 210003, Jiangsu, Peoples R China 2.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Ctr Opt IMagery Anal & Learning OPTIMAL, Xian 710119, Shaanxi, Peoples R China 3.ASTAR, I2R, Singapore, Singapore 4.Univ Elect Sci & Technol China, Chengdu 610054, Peoples R China
推荐引用方式 GB/T 7714	Zou, Yulong,Li, Xuelong,Liang, Ying-Chang. Secrecy Outage and Diversity Analysis of Cognitive Radio Systems[J]. ieee journal on selected areas in communications,2014,32(11):2222-2236.
APA	Zou, Yulong,Li, Xuelong,&Liang, Ying-Chang.(2014).Secrecy Outage and Diversity Analysis of Cognitive Radio Systems.ieee journal on selected areas in communications,32(11),2222-2236.
MLA	Zou, Yulong,et al."Secrecy Outage and Diversity Analysis of Cognitive Radio Systems".ieee journal on selected areas in communications 32.11(2014):2222-2236.