移动通信2023，Vol.47Issue(12)：79-86,98,9.DOI:10.3969/j.issn.1006-1010.20230301-0001
具有非线性能量收集的RIS辅助无线供电通信网络的吞吐量优化
Throughput Maximization for RIS-Assisted Wireless Powered Networks with Non-Linear Energy Harvesting
摘要
Abstract
In order to improve the information throughput and energy transfer efficiency of the wireless powered communication network(WPCN)and realize the sustainable operation of the network,the throughput optimization problem of a reconfigurable intelligent surface(RIS)assisted WPCN is studied,where the non-linear energy harvesting model is adopted and the RIS performs power splitting.This paper studies optimizing the transmit beamforming of the base station(BS),the time allocation,and the reflect beamforming of the RIS to maximize the throughput of the network,subject to the constraints of the maximum transmit power of the BS,the energy consumption of the RIS,the total time,as well as the unit-module reflection coefficients of the RIS.Since the optimization variables of the considered optimization problem are highly coupled,it is difficult to solve this problem directly.This paper proposes an efficient algorithm based on the alternating optimization and positive semidefinite relaxation techniques to solve the problem.Simulation results show that as compared to the existing benchmark schemes,the proposed algorithm can significantly improve the system throughput and reliability.关键词
可重构智能表面/非线性能量收集/无线供电通信网络Key words
reconfigurable intelligent surface/non-linear energy harvesting model/wireless powered communication network分类
信息技术与安全科学引用本文复制引用
张振,容琪龙,张丁才,陈健锋,崔苗,张广驰..具有非线性能量收集的RIS辅助无线供电通信网络的吞吐量优化[J].移动通信,2023,47(12):79-86,98,9.基金项目
国家重点研发计划基金资助项目(2020YFB1805300) （2020YFB1805300）
