Security and Reliability Analysis of Satellite-Terrestrial Multirelay Networks With Imperfect CSI

• Published in: IEEE systems journal Vol. 17; no. 2; pp. 2824 - 2835
• Main Authors: Nguyen, Tan Nhat, Tran, Dinh-Hieu, Van Chien, Trinh, Phan, Van-Duc, Voznak, Miroslav, Chatzinotas, Symeon
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.06.2023; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Cooperative relay; Fading; imperfect channel state information (CSI); Internet of Things; IP networks; Jamming; Numerical models; Parameters; physical layer security; Relay; Relaying; Relays; Reliability analysis; Satellite broadcasting; satellite communications; Security; shadowed Rician channel
• ISSN: 1932-8184; 1937-9234
• DOI: 10.1109/JSYST.2022.3201128

This article investigates the security and reliability analysis for a novel satellite-terrestrial network. Specifically, a satellite attempts to transmit confidential information to a ground user via the support of multiple relay nodes in the presence of an eavesdropper that tries to overhear the information. A friendly jammer is deployed to improve the secure transmission between the satellite and the relays. Furthermore, satellite-to-relay generalized Rician fading channels and imperfect channel state information are deployed to examine a general system model. In this context, the closed-formed expressions for the outage probability and intercept probability are derived corresponding to an amplify-and-forward based relaying scheme, which is challenging and has not been studied before. Finally, the exactness of the mathematical analyses is validated through Monte Carlo simulations. Furthermore, the effects of various key parameters (e.g., channel estimation errors, satellite's transmit power, relay's transmit power, number of relays, and fading severity parameter) are examined.