反向散射辅助的无线供能通信网络的节点间通信  

Communication between nodes in backscatter-assisted wireless powered communication network

作　　者：陶杰 葛海江[2,3] 吴旻媛 邵奇可 池凯凯[3] TAO Jie;GE Haijiang;WU Minyuan;SHAO Qike;CHI Kaikai(Zhejiang Institute of Mechanical&Electrical Engineering Co.,Ltd.,Hangzhou 310051,China;Institute of Information Engineering,Hangzhou Vocational and Technical College,Hangzhou 310018,China;School of Computer Science and Technology,Zhejiang University of Technology,Hangzhou 310023,China)

机构地区：[1]浙江省机电设计研究院有限公司,浙江杭州310051 [2]杭州职业技术学院信息工程学院,浙江杭州310018 [3]浙江工业大学计算机科学与技术学院,浙江杭州310023

出　　处：《电信科学》2021年第6期115-124,共10页Telecommunications Science

基　　金：国家自然科学基金资助项目(No.61872322);浙江省自然科学基金杰出青年科学项目(No.LR20F020003);杭州职业技术学院企业经历工程项目(反向散射辅助的无线供能网络的关键技术研究)。

摘　　要：目前几乎没有无线供能通信网络节点间的信息传输方案设计,研究了反向散射辅助无线供能通信网络节点间的高传输速率信息传输,节点有储能容量且可工作于反向散射通信和主动通信。提出了由节点反向散射/能量传输阶段和节点主动通信阶段构成的方案,并将总传输速率最大化建模为凸优化问题。然后基于反向散射总时长与节点能量捕获时长阈值的关系,将该问题分解为多个仅需优化两个反向散射时长的子问题,并设计高效的两层黄金分割搜索算法求解子问题,从子问题最优解得到原问题最优解。仿真结果表明,与纯主动通信方案和纯反向散射通信方案相比,所提出的方案能有效地提高传输速率。At present,there is almost no design on information transmission between the nodes in wireless powered communication network.The high-throughput information transmission between the nodes in backscatter assisted wireless powered communication network was studied.A scheme was proposed which consisted of backscattering/energy transmission phase and active communication phase.The maximum throughput was modeled as a convex optimization problem.Then,based on the relationship between the total backscatter communication duration and the threshold of node energy capture duration,the problem was decomposed into several sub problems that only need to optimize two backscatter durations.An efficient two-level golden section search algorithm was designed to solve the sub problems,and the optimal solution of the original problem was obtained from the optimal solutions of the sub problems.Simulation results show that,compared with pure active communication scheme and pure backscatter communication scheme,the proposed scheme can effectively improve the throughput.

关 键 词：无线供能通信网络 节点间通信 反向散射通信 传输速率最大化 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]