Open AccessSRT analysis of relay selection in the presence of multiple co‐channel interferers
Author(s) -
Hu Weilong,
Li Zan,
Li Hongyan,
Si Jiangbo,
Huang Haiyan
Publication year - 2017
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2016.0737
Subject(s) - eavesdropping , computer science , rayleigh fading , relay , channel (broadcasting) , computer network , reliability (semiconductor) , transmission (telecommunications) , wireless , selection (genetic algorithm) , physical layer , outage probability , fading , telecommunications , power (physics) , physics , quantum mechanics , artificial intelligence
In this study, a cooperative wireless network is studied based on physical‐layer security, where multiple co‐channel interferers exist at relays, the destination and eavesdropper. Under the influence of multiple co‐channel interferers, the tradeoff between the security and reliability of wireless communications against eavesdropping attacks is analysed in terms of the intercept probability (IP) and the outage probability (OP). The exact closed‐form expressions for the IP and OP are derived for the direct transmission (DT) and the relay selection (RS) schemes over Rayleigh fading channels. The theoretical analysis is validated by numerical results. It is shown that the increase of the number of relays and (or) the number of co‐channel interferers can efficiently improve the security–reliability tradeoff (SRT). Moreover, the RS strategy can achieve a higher SRT performance compared with the DT strategy.