无人机通控一体化鲁棒波束成形算法

      Robust beamforming for communication and control co-design in UAV systems

      • 摘要: 如何实现通信和控制一体化是当前无人机(unmanned aerial vehicles, UAV)领域的一个重要研究课题。针对UAV辅助的卫星通信上行接入场景,提出一种通控一体化的鲁棒波束成形算法。首先,在存在外部干扰且仅已知非完美信道状态信息的情况下,建立以满足控制稳定性、服务质量需求及最大发射功率为约束的遍历和速率最大化问题。然后,针对此非凸问题,利用伯恩斯坦不等式和连续凸逼近方法将非凸约束转化为凸约束,并提出一种交替优化算法实现优化问题的有效求解。最后,仿真结果表明,所提算法可以在保障UAV控制稳定性的同时有效提升系统遍历和速率。

         

        Abstract: How to achieve the integration of communication and control is a crucial research topic in the current field of unmanned aerial vehicles(UAV). Targeting the uplink access scenario of UAV-assisted satellite communication, a robust beamforming algorithm integrating communication and control is proposed. Firstly, considering the presence of external interference and only imperfect channel state information, the problem is established as maximizing the ergodic sum-rate constrained by control stability, quality of service, and maximum transmit power. Next, to address this non-convex problem, the Bernstein inequality and the Successive Convex Approximation method are utilized to convert the non-convex constraints into convex constraints, and an alternating optimization algorithm is proposed for the effective solution of the optimization problem. Finally, simulation results demonstrate that the proposed algorithm can effectively enhance the system's ergodic sum-rate while guaranteeing the control stability of the UAV.

         

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