Secure Beamforming Design for SWIPT in Cooperative D2D Communications

作     者：Li Jiang Cheng Qin Xixi Zhang Hui Tian Li Jiang;Cheng Qin;Xixi Zhang;Hui Tian;State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, and Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory

作者机构：State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunicationsand Science and Technology on Information Transmission and Dissemination in Communication Networks LaboratoryBeijing100876China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2017年第14卷第1期

页      面：20-33页

核心收录：

学科分类：0810[工学-信息与通信工程] 080904[工学-电磁场与微波技术] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0839[工学-网络空间安全] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported in part by National Natural Science Foundation of China under Grants 61602048 National Natural Science Foundation of China under Grants 61471060 Creative Research Groups of China under Grants 61421061 National Science and Technology Major Project of the Ministry of Science and Technology of China under Grants 2015ZX03001025-002 

主　　题：device-to-device(D2D) communications half-duplex relaying physical layer security secure beamforming simultaneous wireless information and power transfer 

摘      要：In device-to-device(D2D) communications, device terminal relaying makes it possible for devices in a network to function as transmission relays for each other to enhance the spectral efficiency. In this paper we consider a cooperative D2D communication system with simultaneous wireless information and power transfer(SWIPT). The cooperative D2D communication scheme allows two nearby devices to communicate with each other in the licensed cellular bandwidth by assigning D2D transmitters as half-duplex(HD) relay to assists cellular downlink transmissions. In particular, we focus on secure information transmission for the cellular users when the idle D2D users are the potential eavesdroppers. We aim to design secure beamforming schemes to maximize the D2D users data rate while guaranteeing the secrecy rate requirements of the cellular users and the minimum required amounts of power transferred to the idle D2D users. To solve this non-convex problem, a semi-definite programming relaxation(SDR) approach is adopted to obtain the optimal solution. Furthermore, we propose two suboptimal secure beamforming schemes with low computational complexity for providing secure communication and efficient energy transfer. Simulation results demonstrate the superiority of our proposed scheme.