安全携能通信网络中面向DPS接收机的资源分配  

RESOURCE ALLOCATION IN SECURE SWIPT NETWORKS FOR DUAL POWER SPLITTING RECEIVERS

作　　者：薛亮[1] 李娜 赵辉[1,2] 王燕龙 Xue Liang;Li Na;Zhao Hui;Wang Yanlong(School of Information and Electrical Engineering,Hebei University of Engineering,Handan 056038,Hebei,China;College of Teacher Education,University of the Cordilleras,Baguio 2600,Philippines;Key Laboratory of Trustworthy Distributed Computing and Service,Beijing University of Posts and Telecommunications,Ministry of Education,Beijing 100876,China)

机构地区：[1]河北工程大学信息与电气工程学院,河北邯郸056038 [2]凯迪雷拉大学教育学院,菲律宾碧瑶2600 [3]北京邮电大学可信分布式计算与服务教育部重点实验室,北京100876

出　　处：《计算机应用与软件》2022年第8期132-138,共7页Computer Applications and Software

基　　金：河北省高层次人才资助项目(A2016002023);河北省高等学校青年拔尖人才计划项目(BJ2014019)。

摘　　要：研究了基于多天线OFDM的无线携能通信网络,为了提高网络安全性,将人工噪声嵌入发射信号。基于非线性能量收集模型,提出一种双层功率分割(Dual power-splitting,DPS)的接收机结构。在满足授权用户能量收集需求、安全信干噪比阈值和基站总发射功率约束下,建立一个最大化网络吞吐量问题。为解决该非凸问题,通过半定松弛方法提出二分法联合优化算法。仿真结果表明了该算法的有效性和收敛性,同时相比基于功率分割/时隙分割的接收机结构,采用提出的DPS接收机结构,网络能保持较高吞吐量。The multi-antenna OFDM in simultaneous wireless information and power transfer(SWIPT)system was studied in the paper.To improve the system security,the artificial noise was embedded into the transmitting signals.Based on the non-linear energy harvesting model,a novel dual power-splitting(DPS)receiver architecture was proposed.A network throughput maximization problem was formulated by satisfying these constraints including the required harvested energy of the legitimate receivers,the secrecy signal-to-interference-noise ratio,and the total available power limit at the base station.In order to solve the formulated non-convex problem,a bisection method based on the semidefinite relaxation was proposed.The simulation results validate the proposed algorithm’s effectiveness and convergence.Compared with the power-splitting or the time-switching receiver architecture,the proposed DPS receiver maintains higher network throughput.

关 键 词：多天线 OFDM 携能通信 人工噪声 非线性能量采集模型 功率分割 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]