论文标题
星际辅助无人机通信系统的联合优化
Joint Optimization of STAR-RIS Assisted UAV Communication Systems
论文作者
论文摘要
在这封信中，我们研究了同时传输和反映可重新配置的智能表面（Star-Ris）辅助无人驾驶汽车（UAV）通信。我们的目标是通过共同优化Star-Ris的波束形成向量，无人机的轨迹和功率分配来最大化所有用户的总和率。我们将公式的非凸问题分解为三个子问题，并交替解决以获取解决方案。模拟表明：1）与传统RIS相比，星际风格的总和率更高； 2）为了利用《星际》的益处，无人机的轨迹比RI的轨迹更接近星际。 3）反射和传播的能量分裂高度取决于无人机的实时轨迹。
In this letter, we study the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted unmanned aerial vehicle (UAV) communications. Our goal is to maximize the sum rate of all users by jointly optimizing the STAR-RIS's beamforming vectors, the UAV's trajectory and power allocation. We decompose the formulated non-convex problem into three subproblems and solve them alternately to obtain the solution. Simulations show that: 1) the STAR-RIS achieves a higher sum rate than traditional RIS; 2) to exploit the benefits of STAR-RIS, the UAV's trajectory is closer to STAR-RIS than that of RIS; 3) the energy splitting for reflection and transmission highly depends on the real-time trajectory of UAV.
