CLC number: TN925.1
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2017-06-01
Cited: 1
Clicked: 7148
Zhen-hua Yuan, Chen Chen, Xiang Cheng, Guo-cheng Lv, Liu-qing Yang, Ye Jin. Correlated channel model-based secure communications in dual-hop wireless communication networks[J]. Frontiers of Information Technology & Electronic Engineering, 2017, 18(6): 796-807.
@article{title="Correlated channel model-based secure communications in dual-hop wireless communication networks",
author="Zhen-hua Yuan, Chen Chen, Xiang Cheng, Guo-cheng Lv, Liu-qing Yang, Ye Jin",
journal="Frontiers of Information Technology & Electronic Engineering",
volume="18",
number="6",
pages="796-807",
year="2017",
publisher="Zhejiang University Press & Springer",
doi="10.1631/FITEE.1700023"
}
%0 Journal Article
%T Correlated channel model-based secure communications in dual-hop wireless communication networks
%A Zhen-hua Yuan
%A Chen Chen
%A Xiang Cheng
%A Guo-cheng Lv
%A Liu-qing Yang
%A Ye Jin
%J Frontiers of Information Technology & Electronic Engineering
%V 18
%N 6
%P 796-807
%@ 2095-9184
%D 2017
%I Zhejiang University Press & Springer
%DOI 10.1631/FITEE.1700023
TY - JOUR
T1 - Correlated channel model-based secure communications in dual-hop wireless communication networks
A1 - Zhen-hua Yuan
A1 - Chen Chen
A1 - Xiang Cheng
A1 - Guo-cheng Lv
A1 - Liu-qing Yang
A1 - Ye Jin
J0 - Frontiers of Information Technology & Electronic Engineering
VL - 18
IS - 6
SP - 796
EP - 807
%@ 2095-9184
Y1 - 2017
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/FITEE.1700023
Abstract: 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.
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