V2I Physical Layer Security Beamforming with Antenna Hardware Impairments under RIS Assistance  

作　　者：Zerong Tang Tiecheng Song Jing Hu 

机构地区：[1]School of Information Science and Engineering,Southeast University,Nanjing,210096,China

出　　处：《Computers, Materials & Continua》2024年第10期1835-1854,共20页计算机、材料和连续体（英文）

基　　金：the Key Research and Development Plan of Jiangsu Province,grant number BE2020084-2;the National Key Research and Development Program of China,grant number 2020YFB1600104.

摘　　要：The Internet of Vehicles(IoV)will carry a large amount of security and privacy-related data,which makes the secure communication between the IoV terminals increasingly critical.This paper studies the joint beamforming for physical-layer security transmission in the coexistence of Vehicle-to-Infrastructure(V2I)and Vehicle-toVehicle(V2V)communication with Reconfigurable Intelligent Surface(RIS)assistance,taking into account hardware impairments.A communication model for physical-layer security transmission is established when the eavesdropping user is present and the base station antenna has hardware impairments assisted by RIS.Based on this model,we propose to maximize the V2I physical-layer security transmission rate.To solve the coupled non-convex optimization problem,an alternating optimization algorithm based on second-order cone programming and semidefinite relaxation is proposed to obtain the optimal V2I base station transmit precoding and RIS reflect phase shift matrix.Finally,simulation results are presented to verify the convergence and superiority of our proposed algorithm while analyzing the impact of system parameters on the V2I physical-layer security transmission rate.The simulation results further demonstrate that the proposed robust beamforming algorithm considering hardware impairments will achieve an average performance improvement of 0.7 dB over a non-robustly designed algorithm.Furthermore,increasing the number of RIS reflective units from 10 to 50 results in an almost 2 dB enhancement in secure transmission rate.

关 键 词：Internet of vehicle reconfigurable intelligent surface physical-layer security transmission antenna hardware impairments 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]