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Secure performance analysis of opportunistic relay and cooperativejamming technique under adaptive eavesdropping and jamming(PDF)


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Secure performance analysis of opportunistic relay and cooperativejamming technique under adaptive eavesdropping and jamming
Jia Lijun12He Yucheng12Zhou Lin12
1.School of Information Science and Engineering,Huaqiao University,Xiamen 361021,China; 2.State Key Laboratory of Integrated Services Networks,Xidian University,Xi’an 710071,China
physical layer security adaptive eavesdropper opportunistic relay cooperative jamming ergodic achievable secrecy rate half-duplex cooperative communication
A multi-relay cooperative communication model is considered,where there exists a half-duplex adaptive eavesdropper that performs either passive eavesdropping or active jamming. To improve the performance in ergodic achievable secrecy rate(EASR),one cooperative relay is selected to assist the source node to transmit information,and the remaining relays are used to send artificial jamming to confuse the eavesdropper. Under the assumption that only the statistical channel state information of the eavesdropper is known,the asymptotic closed-form expression for the EASR is derived,and Monte-Carlo simulations are conducted to validate the derivations. Simulation results show that the asymptotic analysis results coincide well with the simulation results even when the number of relays are relatively small,and meanwhile,the combined opportunistic relaying and cooperative jamming technique can significantly improve the secure transmission performance of the system.


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Last Update: 2019-02-28