Journal Articles - Business and Management - 2023

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Browsing Journal Articles - Business and Management - 2023 by Subject "Amplify-and-forward"
  • Publication
    Security-Reliability Trade-Offs for Satellite-Terrestrial Relay Networks with a Friendly Jammer and Imperfect CSI
    ( 2023)
    Tan N. Nguyen, Dinh-Hieu Tran, Van-Duc Phan, Miroslav Voznak, Symeon Chatzinotas, Zhiguo Ding, H. Vincent Poor
    This paper proposes and analyzes the reliability and security trade-off for a satellite-terrestrial (SatTer) relay system. Herein, a satellite sends confidential information to multiple ground users (GUs) 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 non-identical Rayleigh fading channels and imperfect channel state information (CSI) are adopted for a general system model. Then, we consider both amplify-and-forward (AF) and decodeand- forward (DF) relaying strategies to give a full picture of the benefits of each method. In this context, we derive the closedform expressions of the outage probability (OP) and intercept probability (IP) 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 multi-path components) on the system performance are shown