Joint Antenna and User Selection for Untrusted Relay Networks

He, B. and Ni, Q. and Chen, J. and Yang, L. and Lv, L. (2018) Joint Antenna and User Selection for Untrusted Relay Networks. In: 2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings. IEEE. ISBN 9781538647271

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In this paper, we investigate secure communication for an untrusted relay network, in which a source equipped with N S antennas communicates to M users with the help of an untrusted relay. To protect the data confidentially while concurrently relying on the untrusted relays, joint antenna and user selection scheme has been proposed with the aid of cooperative jamming. Furthermore, the impacts of both the number of antennas and the number of users on system performance are studied. Both the secrecy outage probability (SOP) and ergodic secrecy rate (ESR) are derived in closed form, and the secrecy diversity order of the considered networks is proved to be min(N S , M/2). Compared with the traditional single antenna and single source-destination scenario, both SOP and ESR can achieve a great improvement owing to the mutual effects of antenna diversity and user diversity. In addition, numerical results are conducted to demonstrate the validity of the proposed scheme. © 2018 IEEE.

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20 May 2019 10:20
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21 Nov 2022 16:53