Correlated channel model-based secure communications in dual-hop   wireless communication networks

doi:10.1631/FITEE.1700023

CORC > 北京大学 > 信息科学技术学院

	Correlated channel model-based secure communications in dual-hop wireless communication networks
	Yuan, Zhen-hua ; Chen, Chen ; Cheng, Xiang ; Lv, Guo-cheng ; Yang, Liu-qing ; Jin, Ye
刊名	FRONTIERS OF INFORMATION TECHNOLOGY & ELECTRONIC ENGINEERING
	2017
关键词	Physical layer security Relay beamforming Correlated channels Ergodic secrecy rate PHYSICAL LAYER SECURITY CONFIDENTIAL MESSAGES BROADCAST CHANNELS RELAY SELECTION TAP CHANNEL CAPACITY
DOI	10.1631/FITEE.1700023
英文摘要	This article is focused on secure relay beamformer design with a correlated channel model in the relay-eavesdropper network. In this network, a single-antenna source-destination pair transmits secure information with the help of an amplify-and-forward (AF) relay equipped with multiple antennas, and the legitimate and eavesdropping channels are correlated. The relay cannot obtain the instantaneous channel state information (CSI) of the eavesdropper, and has only the knowledge of correlation information between the legitimate and eavesdropping channels. Depending on this information, we derive the conditional distribution of the eavesdropping channel. Two beamformers at the relay are studied for the approximate ergodic secrecy rate: (1) the generalized match-and-forward (GMF) beamformer to maximize the legitimate channel rate, and (2) the general-rank beamformer (GRBF). In addition, one lower-bound-maximizing (LBM) beamformer at the relay is discussed for maximizing the lower bound of the ergodic secrecy rate. We find that the GMF beamformer is the optimal rank-one beamformer, that the GRBF is the iteratively optimal beamformer, and that the performance of the LBM beamformer for the ergodic secrecy rate gets close to that of the GRBF for the approximate secrecy rate. It can also be observed that when the relay has lower power or the channel gain of the second hop is low, the performance of the GMF beamformer surpasses that of the GRBF. Numerical results are presented to illustrate the beamformers' performance.; National Natural Science Foundation of China [61471008, 61571020, 61622101]; National Key Research and Development Project of China [2016YFE0123100]; SCI(E); 中国科学引文数据库(CSCD); ARTICLE; 6; 796-807; 18
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/473008]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Yuan, Zhen-hua,Chen, Chen,Cheng, Xiang,et al. Correlated channel model-based secure communications in dual-hop wireless communication networks[J]. FRONTIERS OF INFORMATION TECHNOLOGY & ELECTRONIC ENGINEERING,2017.
APA	Yuan, Zhen-hua,Chen, Chen,Cheng, Xiang,Lv, Guo-cheng,Yang, Liu-qing,&Jin, Ye.(2017).Correlated channel model-based secure communications in dual-hop wireless communication networks.FRONTIERS OF INFORMATION TECHNOLOGY & ELECTRONIC ENGINEERING.
MLA	Yuan, Zhen-hua,et al."Correlated channel model-based secure communications in dual-hop wireless communication networks".FRONTIERS OF INFORMATION TECHNOLOGY & ELECTRONIC ENGINEERING (2017).