论文标题
在RIS辅助系统中的信息率和收获功率的双向优化
Bi-objective Optimization of Information Rate and Harvested Power in RIS-aided SWIPT Systems
论文作者
论文摘要
解决了可重新配置的智能表面（RIS）多输入单输出单链路下行无线网络（同时使用无线信息和电源传输（SWIPT））中同时优化信息率和收获功率的问题。波束形成向量，RIS反射系数和功率拆分比是共同优化的，但要受最大功率约束，最小收获功率约束以及对RIS反射系数的实际限制。通过交替优化，顺序优化和基于定价的方法的相互作用开发了实用算法。数值结果表明，RIS的部署可以显着提高信息率和收获功率的量。
The problem of simultaneously optimizing the information rate and the harvested power in a reconfigurable intelligent surface (RIS)-aided multiple-input single-output downlink wireless network with simultaneous wireless information and power transfer (SWIPT) is addressed. The beamforming vectors, RIS reflection coefficients, and power split ratios are jointly optimized subject to maximum power constraints, minimum harvested power constraints, and realistic constraints on the RIS reflection coefficients. A practical algorithm is developed through an interplay of alternating optimization, sequential optimization, and pricing-based methods. Numerical results show that the deployment of RISs can significantly improve the information rate and the amount of harvested power.
