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

Tan Nhat Nguyen, Trinh Van Chien, Dinh Hieu Tran, Van Duc Phan, Miroslav Voznak, Symeon Chatzinotas, Zhiguo Ding, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)7004-7019
Number of pages16
JournalIEEE Transactions on Aerospace and Electronic Systems
Issue number5
StatePublished - Oct 1 2023
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Electrical and Electronic Engineering


  • Amplify-and-forward (AF)
  • decode-and-forward (DF)
  • friendly jammer
  • imperfect channel state information (CSI)
  • nonidentical Rayleigh
  • physical layer security
  • relay networks


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