无线信能同传系统的吞吐量优化研究  

On Throughput Optimization Based on SWIPT Technology

作　　者：吴慧明[1] 王海涛 宋振东 曹红叶 武志强 WU Huiming;WANG Haitao;SONG Zhendong;CAO Hongye;WU Zhiqiang(School of Construction and Environment Engineering,Shenzhen Polytechnic,Shenzhen,Guangdong,China)

机构地区：[1]深圳职业技术学院建筑工程学院,广东深圳518055

出　　处：《深圳职业技术学院学报》2022年第1期15-20,共6页Journal of Shenzhen Polytechnic

基　　金：2020国家自然科学基金联合基金重点项目(U1913213).

摘　　要：本文研究了在下行网络中,大规模多输入单输出(MISO)无线信息和能量同传(SWIPT)系统的吞吐量优化问题.在该场景下,发送端发送波束成型信号与用户进行通信,接收端采用时间切换器进行信号分割,按照时隙切换分别进行信息和能量的收集.通过运用波束成型技术,采取时间分配方案,提高能量获取效率.为了简化目标函数,降低算法的复杂度,提高传输速率,提出了基于迫零准则的波束成型方案,并用拉格朗日对偶法将该非凸问题转化为一个半定规化问题求解.最后,通过仿真验证算法,仿真结果证明基于时间切换器的无线信息和能量同传系统的正确性和合理性.This paper studies the throughput optimization of Multiple Input Single Output(MISO)Simultaneous Wire-less Information and Power Transfer(SWIPT)system in downlink networks.In this scenario,the transmitter sends beam-forming to communicate with the user,the receiver uses time switch to segment the signal,and collects information and power according to the time slot switching.By using beamforming technology,time allocation scheme is adopted to improve the efficiency of energy acquisition.In order to simplify the objective function,reduce the complexity of the algorithm and improve the transmission rate,a beamforming scheme based on zero forcing criterion is proposed,and the nonconvex problem is transformed into a semi definite programming problem by Lagrange dual method.Finally,the algorithm is verified by simulation.Simulation results show that the simultaneous interpreting system based on time switcher is correct and efficient.

关 键 词：无线信能同传 波束成型 拉格朗日对偶法 

分 类 号：TN929[电子电信—通信与信息系统]