Title
Cooperative Beamforming and User Selection for Physical Layer Security in Relay Systems.
Abstract
A cooperative network in which confidential messages are conveyed from a source to a legitimate destination with the help of decode-and-forward relays in the presence of a malicious eavesdropper is considered. Tight upper bounds on the ergodic secrecy rate are derived in the cases of i) cooperative beamforming and ii) multi-user selection. Further, a new concept of cooperative diversity gain, namely, adapted cooperative diversity gain (ACDG), is investigated. It is shown that the ACDG can be seen as an effective metric to evaluate the security level of a cooperative wireless network in the presence of eavesdroppers. Also, the ACDG obtained in the cooperative beamforming scenario is equal to the traditional cooperative diversity gain of traditional multiple-input single-output networks, while the ACDG obtained in the multiuser scenario is equal to that of traditional single-input multiple-output networks.
Year
DOI
Venue
2015
10.1109/GLOCOM.2015.7417262
IEEE Global Communications Conference
Field
DocType
ISSN
Wireless network,Computer science,Cooperative diversity,Upper and lower bounds,Secrecy,Signal-to-noise ratio,Computer network,Physical layer,Relay systems,Cooperative beamforming
Conference
2334-0983
Citations 
PageRank 
References 
1
0.37
18
Authors
5
Name
Order
Citations
PageRank
Tiep Minh Hoang1927.22
Trung Q. Duong22911171.22
Himal A. Suraweera32639117.31
C. Tellambura44889374.02
H. V. Poor5254111951.66