可移动天线辅助的通信感知一体化系统速率最大化研究  

Sum Rate Maximization for Movable Antenna Assisted ISAC Systems

作　　者：张伟 王振军 孙路 崔雅茹 聂础辉 李一鸣 杨刚[3,4] ZHANG Wei;WANG Zhenjun;SUN Lu;CUI Yaru;NIE Chuhui;LI Yiming;YANG Gang(Technical Development Department,Wuhan Tianbaolai Information Technology Co.,Ltd.,Wuhan 430079,China;School of Information Science and Engineering,Hunan Institute of Science and Technology,Yueyang 414006,China;Shenzhen Institute of Advanced Study,UESTC,Shenzhen 518110,China;National Key Laboratory of Wireless Communication,University of Electronic Science and Technology,Chengdu 611731,China)

机构地区：[1]武汉天宝莱信息技术有限公司技术开发部,湖北武汉430079 [2]湖南理工学院信息科学与工程学院,湖南岳阳414006 [3]电子科技大学(深圳)高等研究院,广东深圳518110 [4]电子科技大学通信抗干扰全国重点实验室,四川成都611731

出　　处：《无线电工程》2025年第4期808-814,共7页Radio Engineering

基　　金：湖南省自然科学基金(2024JJ7218,2025JJ70287);深圳市科技计划资助项目(JCYJ20220530164814032);湖南省教育厅项目(23C0217)。

摘　　要：提出了一种用于可移动天线(Movable Antenna,MA)辅助通信感知一体化(Integrated Sensing and Communications,ISAC)系统的通信框架,在保持感知性能的前提下提高ISAC系统的通信性能。双功能基站向用户传输通信信号,同时执行感知功能。通过联合设计基站天线位置和发射波束成形向量,在满足感知性能约束、总功率预算约束的条件下,最大化用户传输速率。由于耦合变量使得问题难以解决,提出了一种交替优化方式来解耦变量,将问题分解为2个子问题,分别采用天线选择法和半定松弛法进行求解。仿真结果展示了所提出的MA辅助ISAC系统传输设计的有效性,相较于传统固定天线方案实现了55%的性能提升。A communication framework is proposed for Movable Antenna(MA)-assisted Integrated Sensing and Communications(ISAC) systems to improve the communication performance of ISAC systems while maintaining sensing capabilities.Specifically,the dual-functional base station transmits communication signals to users and simultaneously performing sensing functions.By jointly optimizing the base station antenna positions and transmit beamforming vectors,the user transmission rate is maximized under the sensing performance constraints and total power budget constraints.To address the problem caused by coupled variables,an alternating optimization approach is proposed to decouple variables,decomposing the problem into two subproblems that are respectively solved using antenna selection method and semidefinite relaxation technique.Simulation results demonstrate the effectiveness of the proposed MA-assisted ISAC transmission design,achieving a 55% performance improvement compared to traditional fixed antenna solutions.

关 键 词：可移动天线 通信感知一体化 天线选择 半定松弛 

分 类 号：TN911[电子电信—通信与信息系统]