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This paper applies beamforming and 3D trajectory optimization techniques into multi-user covert communication systems. Firstly, the system model of the multi-user covert UAV communications is established. By designing robust beamforming vectors, slot allocation coefficients and 3D trajectory optimization of UAV-BS, the average covert rate of the minimum user is maximized. To cope with it, the non-convex optimization problem is decomposed into three sub-problems and a joint optimization algorithm is proposed to obtain the optimal solution by alternately solving the three sub-problems. Finally, the effectiveness of the proposed algorithm is verified through simulations.

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Beamforming and 3D Trajectory Design for Multi-user Covert UAV Communication Under No-Fly Zone

  • 会议论文

  • 发表日期：

    2026年

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  • Zhengfeng Guan,
  • Lichao Liu,
  • Hao Li,
  • Shengbin Lin,
  • Yongjun Gu

摘要

This paper applies beamforming and 3D trajectory optimization techniques into multi-user covert communication systems. Firstly, the system model of the multi-user covert UAV communications is established. By designing robust beamforming vectors, slot allocation coefficients and 3D trajectory optimization of UAV-BS, the average covert rate of the minimum user is maximized. To cope with it, the non-convex optimization problem is decomposed into three sub-problems and a joint optimization algorithm is proposed to obtain the optimal solution by alternately solving the three sub-problems. Finally, the effectiveness of the proposed algorithm is verified through simulations.