考虑硬件损耗的智能反射面辅助无线携能通信系统  

Communication system with intelligent reflecting surface aided simultaneous wireless information and power transfer considering hardware impairments

作　　者：何春龙[1,2] 王新龙[1] 李兴泉 钱恭斌 HE Chunlong;WANG Xinlong;LI Xingquan;QIAN Gongbin(Guangdong Key Laboratory of Intelligent Information Technology,Shenzhen 518060,Guangdong Province,P.R.China;National Mobile Communication Research Laboratory,Southeast University,Nanjing 211189,Jiangsu Province,P.R.China;School of Microelectronics,Shenzhen Institute of Information Technology,Shenzhen 518172,Guangdong Province,P.R.China)

机构地区：[1]深圳大学广东省智能信息处理重点实验室,广东深圳518060 [2]东南大学国家移动通信研究实验室,江苏南京211189 [3]深圳信息职业技术学院微电子学院,广东深圳518172

出　　处：《深圳大学学报（理工版）》2023年第1期22-32,共11页Journal of Shenzhen University(Science and Engineering)

基　　金：国家自然科学基金资助项目(62101161);广东省基础研究计划资助项目(2019A1515110358,2021A1515012097);深圳市基础研究计划资助项目(20200811192821001,JCYJ20190808122409660)。

摘　　要：为验证收发器硬件损耗对通信系统性能的影响,在考虑收发器硬件损耗的情况下,对智能反射面(intelligent reflecting surface,IRS)辅助的携能通信(simultaneous wireless information and power transfer,SWIPT)系统的鲁棒性传输设计进行研究.在考虑基站的最大发射功率、能量收集器的最小接收能量和IRS无源波束成形的约束下,将优化目标设为最大化所有信息接收者的加权和速率,并使用块坐标下降(block coordinate descent,BCD)算法将优化问题分解成多个优化子问题,交替优化.对于基站有源波束成形和IRS无源波束成形的优化问题,分别采用拉格朗日对偶方法和最优化最大化(majorization minimization,MM)算法来解决.仿真结果验证了收发器硬件损耗对系统性能的影响,也证实了信息接收端的硬件损耗要比基站发射端的硬件损耗对系统造成的性能下降更明显.In order to verify the impact of transceiver hardware impairments on the performance of communication system, we explore the robust transmission design of an intelligent reflecting surface(IRS) aided simultaneous wireless information and power transfer(SWIPT) communication system in consideration of hardware impairments of transceiver. Under the constraints of maximum transmitting power of base station, the minimum receiving energy of the energy collector and IRS passive beamforming, the optimization objective is set to maximize the weighted sum rate of all information receivers. And the block coordinate descent(BCD) algorithm is used to decompose the optimization problem into multiple optimization subproblems for alternate optimization. The Lagrange dual method and maximization minimization(MM) algorithm are respectively adopted to solve the optimization problems of active beamforming and IRS passive beamforming. Simulation results validate the impact of transceiver hardware impairments on system performance, and also confirm that the hardware impairment at information receiver is more obvious than the hardware impairment at base station transmitter.

关 键 词：无线通信技术 携能通信 硬件损耗 智能反射面 多输入多输出 块坐标下降算法 

分 类 号：TN92[电子电信—通信与信息系统]