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• W2946686343 abstract "This paper proposes a robust beamforming (BF) scheme to enhance the physical layer security (PLS) of a multibeam satellite system operating at Ka band. By considering the effects of beam gain, path loss, and rain attenuation, we first formulate a constrained optimization problem to maximize the minimal achievable secrecy rate of multiuser under the assumption of imperfect eavesdropping channel and the constraint of total transmit power on the satellite. Since the problem is non-convex and mathematically intractable, we exploit the sequential convex approximation approach and S-procedure method to transform the original problem into one with a series of linear matrix inequality and second-order cone constraints, and then propose an iterative scheme to obtain the optimal BF weight vectors. Finally, simulation results showing the effectiveness and superiority of the proposed algorithm are provided." @default.
• W2946686343 created "2019-05-29" @default.
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• W2946686343 date "2019-06-01" @default.
• W2946686343 modified "2023-10-16" @default.
• W2946686343 title "Robust Secure Beamforming for Multibeam Satellite Communication Systems" @default.
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• W2946686343 doi "https://doi.org/10.1109/tvt.2019.2913793" @default.
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