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http://dx.doi.org/10.6109/jkiice.2016.20.12.2213

A Relay Selection Scheme for Network Security  

Lee, Byeong Su (Department of Information and Communication, Gyeongsang National University)
Sung, Kil-Young (Department of Information and Communication, Gyeongsang National University)
Ban, Tae-Won (Department of Information and Communication, Gyeongsang National University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.20, no.12, 2016 , pp. 2213-2218 More about this Journal
Abstract
In this paper, we propose a new relay selection scheme which can decrease the secrecy outage probability in a relay communication network with multiple relays and an eavesdropper. In the conventional relay selection scheme, a relay transmits jamming signal toward an eavesdropper to decrease the successful decoding probability of the eavesdropper. The coventional scheme has a critical problem that the successful decoding probability of a receiver also decreases. The new relay selection scheme proposed in this paper can significantly enhance the secrecy outage probability by selecting a pair of relays which can increase the successful decoding probability of the receiver while decreasing the successful decoding probability of the eavesdropper. We performed extensive computer simulation based on Monte-Carlo. The simulation results reveal that the proposed relay selection scheme can improve the secrecy outage probability by 10 to 50 times compared to the existing relay selection scheme.
Keywords
Relay network; relay selection; secrecy rate; secrecy outage probability;
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