This article proposes and analyzes the reliability and security tradeoff for a satellite–terrestrial (SatTer) relay system. Herein, a satellite sends confidential information to multiple ground users with the help of a relay base station (BS) in the presence of multiple eavesdroppers trying to wiretap the information. In particular, a friendly jammer is deployed near the relay BS to improve secure transmissions. Moreover, the nonidentical Rayleigh fading channels and imperfect channel state information are adopted for a general system model. Then, we consider both amplify-and-forward (AF) and decode-and-forward (DF) relaying strategies to give a full picture of the benefits of each method. In this context, we derive the closed-form expressions of the outage probability and intercept probability corresponding to AF- and DF-based relaying schemes, which is a high challenge and has not been investigated before. Then, Monte-Carlo simulations are conducted to evaluate the correctness of the mathematical analysis and the effectiveness of the proposed methods. Furthermore, the security and reliability trade-off of the SatTer system and the influences of various system parameters (e.g., satellite's transmit power, channel estimation errors, relay's transmit power, fading severity parameter, the average power of light-of-sight, and satellite's multipath components) on the system performance are shown.


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    Titel :

    Security-Reliability Tradeoffs for Satellite–Terrestrial Relay Networks With a Friendly Jammer and Imperfect CSI


    Beteiligte:
    Nguyen, Tan Nhat (Autor:in) / Van Chien, Trinh (Autor:in) / Tran, Dinh-Hieu (Autor:in) / Phan, Van-Duc (Autor:in) / Voznak, Miroslav (Autor:in) / Chatzinotas, Symeon (Autor:in) / Ding, Zhiguo (Autor:in) / Poor, H. Vincent (Autor:in)


    Erscheinungsdatum :

    01.10.2023


    Format / Umfang :

    1897073 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch