公开(公告)号：US12294423B2

公开(公告)日：2025-05-06

申请号：US18387063

申请日：2023-11-06

Applicant: Beijing University of Posts and Telecommunications

Inventor： Hui Tian ,  Wen Wang ,  Ping Zhang ,  Gaofeng Nie ,  Xue Rong ,  Wanli Ni

IPC: H04B7/04 ,  H04B7/0426

Abstract: A multi-functional reconfigurable intelligence surface (MF-RIS) integrating signal reflection, refraction and amplification and energy harvesting and an application thereof are provided. The MF-RIS can support wireless signal reflection, refraction and amplification and energy harvesting on one surface, to amplify, reflect, or refract a signal through harvested energy, and further enhance effective coverage of wireless signals. When a signal model of the MF-RIS constructed in the present disclosure is applied to a multi-user wireless network, a non-convex optimization problem of jointly designing operation modes and parameters that include BS transmit beamforming, and different components and a deployment position of the MF-RIS is constructed with an objective of maximizing a sum rate (SR) of a plurality of users in an MF-RIS-assisted non-orthogonal multiple access network. Then, an iterative optimization algorithm is designed to effectively solve the non-convex optimization problem, to maximize the SR of the plurality of users.