Joint Optimization of STAR-RIS Assisted UAV Communication Systems
arXiv:2209.03777 · doi:10.1109/LWC.2022.3204353
Abstract
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.
arXiv comment5 pages, 4 figures
References in corpus (4)
- STAR: Simultaneous Transmission And Reflection for 360° Coverage by Intelligent Surfaces
- Exploiting Intelligent Reflecting Surfaces in NOMA Networks: Joint Beamforming Optimization
- Joint Design for Simultaneously Transmitting And Reflecting (STAR) RIS Assisted NOMA Systems
- Simultaneously Transmitting and Reflecting (STAR)-RISs: A Coupled Phase-Shift Model