无线电通信技术2025，Vol.51Issue(5)：891-898,8.DOI:10.3969/j.issn.1003-3114.2025.05.002
STAR-RIS辅助无线供能通信的吞吐量优化研究
Throughput Optimization of Active STAR-RIS Assisted Wireless Powered Communication Network
摘要
Abstract
In this paper,a Wireless Powered Communication Network(WPCN)based on Active Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surface(ASTAR-RIS)is proposed.The communication network is mainly composed of four parts Power Station(PS),Sensor Node Groups(SNGs),ASTAR-RIS and Access Point(AP).The operation process of the communication system is mainly divided into two stages Wireless Energy Transfer(WET)stage and Wireless Information Transfer(WIT)stage.Ener-gy Splitting(ES)mode is adopted in the wireless energy transmission phase,and Time Switching(TS)mode is adopted in the wireless information transmission phase.This paper aims to optimize the phase shift parameters and communication resource allocation of ASTAR-RIS to maximize system throughput.Since the optimization problem is non-convex,this paper uses an alternate optimization al-gorithm to solve the problem.Firstly,the problem is divided into two parts according to the coupled variables.The optimal solutions of the variables in these two parts are solved by Semidefinite Relaxation(SDR)and Fractional Programming(FP)respectively.Experi-mental results show that the communication scheme proposed in this paper can provide higher performance gain for the system.关键词
无线供能通信网络/同时透射和反射的有源可重构智能表面/凸优化Key words
WPCN/ASTAR-RIS/convex optimization分类
信息技术与安全科学引用本文复制引用
谢文武,袁曾家,李桂林,李一鸣,黄杰,周振威..STAR-RIS辅助无线供能通信的吞吐量优化研究[J].无线电通信技术,2025,51(5):891-898,8.基金项目
湖南省自然科学联合基金(2023JJ50045)Provincial Natural Science Foundation of Hunan(2023JJ50045) （2023JJ50045）
