Simultaneous Transmission and Reflection Reconfigurable Intelligent Surface Assisted Secrecy MISO Networks

被引：107
作者：
Niu, Hehao [1 ]
Chu, Zheng [2 ,3 ]
Zhou, Fuhui [4 ,5 ]
Zhu, Zhengyu [6 ]
机构：
[1] Natl Univ Def Technol, Inst Elect Countermeasure, Hefei 230037, Peoples R China
[2] Univ Surrey, Inst Commun Syst, Guildford GU2 7XH, Surrey, England
[3] Xian Univ Posts & Thlecommun, Shaanxi Key Lab Informat Commun Network & Secur, Xian 710121, Shaanxi, Peoples R China
[4] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Nanjing 210000, Peoples R China
[5] Nanjing Univ Aeronaut & Astronaut, Key Lab Dynam Cognit Syst Electromagnet Spectrum, Nanjing 210000, Peoples R China
[6] Zhengzhou Univ, Sch Informat Engn, Zhengzhou 450001, Peoples R China
来源：
IEEE COMMUNICATIONS LETTERS | 2021年 / 25卷 / 11期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Protocols; Security; MISO communication; Phase shifters; Communication system security; Wireless networks; Signal to noise ratio; Reconfigurable intelligent surface; simultaneously transmitting and reflecting; secure communication; penalty concave convex procedure; OPTIMIZATION;
D O I：
10.1109/LCOMM.2021.3109164
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This work exploits the potential of a novel simultaneous transmission and reflection reconfigurable intelligent surface (STAR-RIS) in improving the security in a multiple-input single-output (MISO) network, where three transmission protocols, namely, energy splitting (ES), mode selection (MS), and time splitting (TS), are studied. The objective is to maximize the weighted sum secrecy rate (WSSR) by jointly designing the beamforming (BF) and the transmitting and reflecting coefficients (TARCs). A path-following based technique is first developed to covert the non-convex problem and design the BF and the TARCs in an alternating manner. Then, for the ES scheme, the TARCs are solved by a penalty concave convex procedure (PCCP) method. Besides, the proposed method is extended to the MS by solving a mixed-integer problem. While for the TS scheme, a two-layer optimization method is proposed. Finally, the simulation results validate the superiority of STAR-RIS.
引用
收藏
页码：3498 / 3502
页数：5
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