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Physical Layer Security in Cognitive Buffer-Aided Relay Networks
Jia Jian 1,Jiang Ting 2 *
1.Key Laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876;Key Laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876
2.
*Correspondence author
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Funding: National Natural Sciences Foundation of China （No.NSFC)）
Opened online:20 October 2017
Accepted by: none
Citation: Jia Jian,Jiang Ting.Physical Layer Security in Cognitive Buffer-Aided Relay Networks[OL]. [20 October 2017] http://en.paper.edu.cn/en_releasepaper/content/4741723
 
 
This paper considers the security of transmission in buffer-aideddecode-and-forward underlay cognitive radio network, where aneavesdropper can intercept the data transmission from the source and relay nodes. In this paper, a new buffer-aidedrelay selection scheme is proposed to optimize the secrecy transmission, inwhich the interference introduced by primary transmitter andprimary receiver are considered. Moreover, finite size data buffersare assumed to be available at every relay to avoid selectingthe best source-to-relay and relay-to-destination links concurrently,and the secrecy outage probability in proposed schemeis derived. The proposed scheme is evaluated using simulationand theoretical results, which show that proposed scheme hasperformance advantage over the conventional unbuffered relayselection scheme.
Keywords:Communication Engineering; Physical Layer Security; Cognitive Radio Network; Buffer-aided Relay
 
 
 

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