Secrecy outage performance for partial relay selection schemes in cooperative systems. Issue 16 (1st November 2015)

• Record Type: Journal Article
• Authors: Zhou, Yameng; Pan, Gaofeng; Li, Tingting; Liu, Hequn; Tang, Chaoqing; Chen, Yunfei
• Is Part Of: IET communications. Volume 9:Issue 16(2015)
• Page Start: 1980
• Page End: 1987
• Publication Date: 2015-11-01
• Subjects: relay networks (telecommunication) -- cooperative communication -- probability -- Rayleigh channels -- jamming -- interference suppression -- telecommunication security -- radio links; secrecy outage performance -- partial relay selection scheme -- cooperative system -- Rayleigh fading channels -- eavesdropper -- jammer -- transmitted information protection -- XOR operation -- PRS scheme -- optimal source–relay link scheme -- optimal source–relay–destination link scheme -- secrecy outage probability -- OSRL scheme -- OSRDL scheme -- upper bound -- lower bound; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2015.0109
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : In this study, secrecy outage performance is studied for partial relay selection (PRS) schemes in cooperative systems over Rayleigh fading channels. In the considered systems, there are one source (S), one destination (D), one eavesdropper, one jammer that can send interference to the eavesdropper, and N ( N > 1) relay candidates, one of which is selected as the relay (R). By considering the practical scenarios and to protect the transmitted information over R–D link from being eavesdropped, the authors propose a new transmission scheme: let D send random information to R while S sending information to R. Then, R processes the messages from S and D by XOR operation in order to prevent the eavesdropper's interception while the information is delivered between R and D. They study the secrecy outage performance for two PRS schemes: (i) the optimal source–relay link (OSRL) scheme; and (ii) the optimal source–relay–destination link (OSRDL) scheme. The closed‐form expressions for the secrecy outage probability (SOP) of the two PRS schemes are derived, as well as the closed‐form upper bound for SOP under OSRL scheme and the lower bound for SOP under OSRDL scheme. Finally, simulation results are given to verify the presented analytical models and the proposed transmission scheme.