The National Natural Science Foundation of China(62071090);Sichuan Province International Science and Technology Innovation Cooperation / Hong Kong, Macao, and Taiwan Science and Technology Innovation Cooperation Project(2023YFH0092)
In response to the limitations of traditional reconfigurable intelligent surfaces (RIS) in UAV-assisted secure communications
such as insufficient flexibility and inadequate system security
as well as the challenges of low spectral efficiency and poor communication efficiency faced by current half-duplex UAV communication systems
a dual-machine cooperative solution involving aerial reconfigurable intelligent surfaces (ARIS) and full-duplex UAV was proposed
aiming at enhancing communication security and efficiency against ground eavesdroppers. An optimization problem was designed to maximize the minimum average achievable security rate by jointly optimizing user communication scheduling
transmission power
the interference power sent by UAV
their flight trajectories
and the phase shifts and trajectories of ARIS. An iterative algorithm based on alternating optimization (AO)
semi-definite relaxation (SDR) techniques
and successive convex approximation (SCA) was proposed to obtain high-quality suboptimal solutions. Simulation results demonstrate the effectiveness of the ARIS and full-duplex UAV combination in enhancing communication quality and security performance
showcasing its superiority in complex security communication environments.
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references
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