论文标题
耦合的移相星船：一般优化框架
Coupled Phase-Shift STAR-RISs: A General Optimization Framework
论文作者
论文摘要
提出了一个一般优化框架，用于与耦合相移的同时传输和反映可重构表面（Star-criss），在某些温和条件下，该框架会收敛到Karush-Kuhn-Tucker（KKT）最佳解决方案。更特别地，以封闭形式优化星轮的振幅和相移系数。为了证明所提出的优化框架的有效性，在案例研究中考虑了吞吐量最大化问题。严格证明获得了KKT最佳解决方案。与基线方案相比，数值结果证实了所提出的优化框架的有效性。
A general optimization framework is proposed for simultaneously transmitting and reflecting reconfigurable surfaces (STAR-RISs) with coupled phase shifts, which converges to the Karush-Kuhn-Tucker (KKT) optimal solution under some mild conditions. More particularly, the amplitude and phase-shift coefficients of STAR-RISs are optimized alternatively in closed form. To demonstrate the effectiveness of the proposed optimization framework, the throughput maximization problem is considered in a case study. It is rigorously proved that the KKT optimal solution is obtained. Numerical results confirm the effectiveness of the proposed optimization framework compared to baseline schemes.
