Paper Info
Title
Improving Physical Layer Security In Af Relay Networks Via Beam-Forming And Jamming
Abstract
In this paper the cooperation of beam-forming and artificial noise (AN) in two-hop amplify-and-forward (AF) relaying system is proposed to enhance the security. we consider a half duplex AF relaying network with a multi-antenna source node and a destination in the presence of a passive eavesdropper. Since channel state information (CSI) of the eavesdropper is unknown, the AN transmitted by the source in the first phase and by the relays in the second phase is in all directions except the legitimate node one. As such two scenarios are considered here,: i) when all the relays amplify and forward the information source signal ii) when only the best relay is selected to amplify and forward the information source signal. The beam-former weights and the power allocation are obtained by solving an optimization problem. Results reveal that the proposed system can provide considerable improvements in terms of secrecy rate. It is also found that increasing the AN power, relative to the information signal power, will further improve the secrecy rate.
Year
Venue
Keywords
2016
2016 IEEE 84TH VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL)
Physical layer security, beam-forming, cooperative relaying, jamming, secrecy rate
Field
DocType
ISSN
Computer science,Network security,Computer network,Electronic engineering,Physical layer,Artificial noise,Optimization problem,Jamming,Relay,Duplex (telecommunications),Channel state information
Conference
2577-2465
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Abdelhamid Salem1344.77
Khairi Ashour Hamdi242645.64