Security performance analysis of DF cooperative relay networks over Nakagami-m fading channels

Huan Zhang, Hongjiang Lei*, Imran Shafique Ansari, Gaofeng Pan, Khalid A. Qaraqe

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摘要

In this paper, we investigate the security performance for cooperative networks over Nakagami-m fading channels. Based on whether the channel state information (CSI) of wiretap link is available or not, optimal relay selection (ORS) and suboptimal relay selection (SRS) schemes are considered. Also, multiple relays combining (MRC) scheme is considered for comparison purpose. The exact and asymptotic closed-form expressions for secrecy outage probability (SOP) are derived and simulations are presented to validate the accuracy of our proposed analytical results. The numerical results illustrate that the ORS is the best scheme and SRS scheme is better than MRC scheme in some special scenarios such as when the destination is far away from the relays. Furthermore, through asymptotic analysis, we obtain the closed-form expressions for the secrecy diversity order and secrecy array gain for the three different selection schemes. The secrecy diversity order is closely related to the number of relays and fading parameter between relay and destination.

源语言英语
页(从-至)2416-2432
页数17
期刊KSII Transactions on Internet and Information Systems
11
5
DOI
出版状态已出版 - 2017
已对外发布

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Zhang, H., Lei, H., Ansari, I. S., Pan, G., & Qaraqe, K. A. (2017). Security performance analysis of DF cooperative relay networks over Nakagami-m fading channels. KSII Transactions on Internet and Information Systems, 11(5), 2416-2432. https://doi.org/10.3837/tiis.2017.05.006