Robust Frame-Based Beamforming Scheme to Enhance Secure Multigroup Multicast Transmission for Multibeam Satellite Systems

• Published in: IEEE transactions on vehicular technology Vol. 73; no. 3; pp. 4407 - 4411
• Main Authors: Zhao, Bai, Lin, Min, Li, Fei, Cheng, Ming, Al-Dhahir, Naofal
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.03.2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Array signal processing; Beamforming; Constraints; Interference; IP networks; Multibeam satellite systems; Multicasting; multigroup multicast transmission; Optimization; Outages; physical layer security; Precoding; probabilistic constraints; robust frame-based beamforming; Robustness; Satellite antennas; Satellite broadcasting; Satellites; Security
• ISSN: 0018-9545; 1939-9359
• DOI: 10.1109/TVT.2023.3324437

In this article, we propose a robust frame-based beamforming (BF) scheme to enhance the physical layer security for multigroup multicast transmission in a multibeam satellite system. By assuming that only the imperfect channel state information of each user is known, we formulate a constrained optimization problem to maximize the minimal transmission-outage rate with fairness, subject to outage probability (OP) constraints of all satellite terminals (STs), the intercept probability (IP) constraint of an eavesdropper (Eve), and the per-feed power budget. To cope with this complicated optimization problem, we first propose to adopt the Bernstein Inequalities, norm compatibility and <inline-formula><tex-math notation="LaTeX">S</tex-math></inline-formula>-procedure to convert the OP and IP constraints into deterministic forms. Then, we propose a robust frame-based secure multigroup multicast BF scheme to solve it efficiently. Finally, our simulation results demonstrate the superiority and robustness of the proposed robust BF scheme, and confirm that our proposed scheme can significantly improve the security and reliability for multibeam satellite systems.