Security-Reliability Tradeoffs for Dual-Hop Satellite Communication Systems with AF Relaying Protocol

Shuangrui Zhao

¹ School of Computer Science and Engineering, Xi’an University of Technology, Xi’an, 710048, China

² Shaanxi Key Laboratory for Network Computing and Security Technology, Xi’an, 710048, China

³ School of Computer Science and Technology, Xidian University, Xi’an, 710071, China

⁴ Shaanxi Key Laboratory of Network and System Security, Xidian University, Xi’an, 710071, China

*Corresponding author

Satellite communication systems serve as an indispensable component of heterogeneous wireless networks in the next generation era for providing various critical civil and military applications. However, due to the broadcast nature and full accessibility of the wireless medium, such systems exist serious security threats. As an effort to address this issue, this paper, for the first time, investigates secure communication in a dual-hop communication system consisting of a satellite working as an amplified-and-forward relay. We first provide the theoretical modeling to analyze the fundamental system metrics in terms of secrecy outage probability and connection outage probability. By using the modeling, we then study the security-reliability tradeoffs and propose to transmit power schemes depending on the search algorithm. We further analyze asymptotic expressions of outage performance, which was further utilized to simplify the transmit power schemes. Simulation results show the validation of the proposed secure transmission model and design schemes of transmit power. Results also illustrate that transmit power schemes based on asymptotic analysis effectively achieve the optimal performance for the relay satellite communication system.

Dual-hop satellite communication, physical layer security, secrecy outage probability, connection outage probability, security-reliability tradeoffs

Yeqiu Xiao, Jin Liu, and Shuangrui Zhao (2022). Security-Reliability Tradeoffs for Dual-Hop Satellite Communication Systems with AF Relaying Protocol. Journal of Networking and Network Applications, Volume 2, Issue 2, pp. 68–77. https://doi.org/10.33969/J-NaNA.2022.020202.

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