基于非理想条件可重构智能超表面辅助无线携能通信-非正交多址接入系统通感性能研究  

Communication and Sensing Performance Analysis of RIS-assisted SWIPT-NOMA System under Non-ideal Conditions

作　　者：李兴旺 王新莹 田心记 王心水 秦攀科 陈慧 LI Xingwang;WANG Xinying;TIAN Xinji;WANG Xinshui;QIN Panke;CHEN Hui(School of Physics and Electronic Information,Henan Polytechnic University,Jiaozuo 454003,China;College of Computer,Qufu Normal University,Rizhao 276826,China;College of Computer Science and Technology,Henan Polytechnic University,Jiaozuo 454003,China)

机构地区：[1]河南理工大学物理与电子信息学院,焦作454003 [2]曲阜师范大学计算机学院,日照276826 [3]河南理工大学计算机科学与技术学院,焦作454003

出　　处：《电子与信息学报》2024年第6期2434-2442,共9页Journal of Electronics & Information Technology

基　　金：河南省重点研发专项(231111210500);山东省自然科学基金(ZR2021MF013);测绘科学与技术“双一流”学科创建项目(GCCRC202306);河南理工大学博士基金(B2018-39)。

摘　　要：为满足日益增长的高效通信和可靠感知需求,该文提出可重构智能超表面(RIS)辅助无线携能通信(SWIPT)-非正交多址接入(NOMA)系统,该系统同时实现目标感知和信息传输。考虑非完美连续干扰消除(SIC)和信道估计误差(CEE)两种非理想因素,分析了所提系统的可靠性、有效性以及雷达感知性能,分别推导出系统中断概率(OP)、遍历速率(ER)、检测概率(PoD)以及雷达估计信息速率(REIR)的解析表达式。分析结果表明:非完美SIC和CEE对系统的性能有负面影响;中断概率随基站发射功率的增大而减小,在高信噪比区域趋于定值;遍历速率及雷达估计信息速率随基站发射功率增大而增加,在高信噪比区域稳定于一个上限值;在不同的检测阈值下,检测概率随基站发射功率的增大而增大;联合雷达检测和通信覆盖概率(JRDCCP)分别随中断阈值和检测阈值的升高而降低。To meet the escalating demands for efficient communication and reliable sensing,a Reconfigurable Intelligent Surface(RIS)-assisted Simultaneous Wireless Information and Power Transfer(SWIPT)-Non-Orthogonal Multiple Access(NOMA)system is proposed in this paper.This system is designed to concurrently achieve target sensing and information transmission.Considering the imperfections of Successive Interference Cancellation(SIC)and Channel Estimation Error(CEE),a comprehensive analysis of the system’s reliability,effectiveness,and radar sensing performance is conducted.Analytical expressions for the Outage Probability(OP),Ergodic Rate(ER),Probability of Detection(PoD),and Radar Estimation Information Rate(REIR)of the system are derived to provide insights into its performance.The analysis results reveal the following findings:the presence of imperfect SIC and CEE adversely impacts the system’s performance;the OP diminishes as the transmitted power of base station increases,eventually converging to a constant value in the high Signal-to-Noise Ratio(SNR)region;both the ER and the REIR increase with the base station’s transmitted power and eventually stabilize at an upper limit value in the high SNR region;the PoD increases with the base station’s transmit power at different detection thresholds;the Joint Radar Detection and Communication Coverage Probability(JRDCCP)decreases with the outage threshold and detection threshold,respectively.

关 键 词：通感一体化 可重构智能超表面 无线携能通信 非正交多址接入 

分 类 号：TN92[电子电信—通信与信息系统]