To address secrecy performance in a multi-relay underlay wiretap spectrum sharing network, we present a secrecy rate-optimal relay and antenna selection scheme, which serves as a fundamental benchmark. It jointly selects a transmit antenna at a secondary source, a receive antenna at its destination, and a relay between them to maximize the secrecy rate at the destination under the malicious attempt of an eavesdropper. We derive exact and asymptotic expressions for the secrecy outage probability, which accurately reveal the secrecy diversity order and the coding gain. Under a proportional interference constraint, full secrecy diversity order is achieved only when the main link is stronger than the wiretap link, otherwise the diversity gain is lost. We then consider a practical scenario where the secondary users have only the mean channel power gains of the wiretap links. Under such channel state information (CSI), we propose a statistical CSI-based relay and antenna selection scheme and numerically show that this can be used as a better performance/complexity tradeoff. Both the schemes substantially outperform the conventional relay and antenna selection scheme, which requires no CSI about the wiretap links.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Secrecy-Aware Relay and Antenna Selection for MIMO Wiretap Spectrum-Sharing Network


    Beteiligte:
    Das, Priyanka (Autor:in) / Hegade, Pradyumna (Autor:in)


    Erscheinungsdatum :

    01.06.2022


    Format / Umfang :

    438026 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Efficient Numerical Methods for Secrecy Capacity of Gaussian MIMO Wiretap Channel

    Mukherjee, Anshu / Ottersten, Bjorn / Tran, Le Nam | IEEE | 2021



    Joint Relay-and-Antenna Selection in Relay-Based MIMO-NOMA Networks

    Zhang, Jian / Ge, Jianhua / Ni, Qiang | IEEE | 2018



    On the Average Secrecy Capacity for FSO Wiretap Channels with Nonzero Boresight Pointing Errors

    Boluda-Ruiz, Ruben / Castillo-Vazquez, Carmen / Castillo-Vazquez, Beatriz et al. | IEEE | 2018