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可重构智能表面辅助双功能雷达通信系统的联合波束优化

王华华 孙宸 朱鹏云

王华华, 孙宸, 朱鹏云. 可重构智能表面辅助双功能雷达通信系统的联合波束优化[J]. 电子与信息学报, 2024, 46(1): 222-228. doi: 10.11999/JEIT221537
引用本文: 王华华, 孙宸, 朱鹏云. 可重构智能表面辅助双功能雷达通信系统的联合波束优化[J]. 电子与信息学报, 2024, 46(1): 222-228. doi: 10.11999/JEIT221537
WANG Huahua, SUN Chen, ZHU Pengyun. Joint Beamforming Optimization for RIS-Assisted Dual-Functional Radar-Communication Systems[J]. Journal of Electronics & Information Technology, 2024, 46(1): 222-228. doi: 10.11999/JEIT221537
Citation: WANG Huahua, SUN Chen, ZHU Pengyun. Joint Beamforming Optimization for RIS-Assisted Dual-Functional Radar-Communication Systems[J]. Journal of Electronics & Information Technology, 2024, 46(1): 222-228. doi: 10.11999/JEIT221537

可重构智能表面辅助双功能雷达通信系统的联合波束优化

doi: 10.11999/JEIT221537
基金项目: 重庆市自然科学基金(cstc2021jcyj-msxmX0454)
详细信息
    作者简介:

    王华华:男,高级工程师,研究方向为移动通信基带信号处理、卫星通信、通感一体化

    孙宸:男,硕士生,研究方向为物理层算法和可重构智能表面技术

    朱鹏云:男,硕士生,研究方向为物理层算法和可重构智能表面技术

    通讯作者:

    孙宸 940355803@qq.com

  • 中图分类号: TN958; TN929.5

Joint Beamforming Optimization for RIS-Assisted Dual-Functional Radar-Communication Systems

Funds: The Natural Science Foundation of Chongqing (cstc2021jcyj-msxmX0454)
  • 摘要: 双功能雷达通信系统(DFRC)是有效解决未来网络频谱资源拥挤问题的理想技术之一,该文引入了可重构智能表面(RIS)技术,旨在提升用户的加权和速率和系统的探测性能。首先在雷达功率约束和可重构智能表面的恒定模约束以及通信的整体功率预算下,构建了通信用户的加权和速率和系统探测性能最大化的优化模型。通过联合优化基站的主动波束和可重构智能表面的无源被动波束形成,该文设计了一种有效的基于加权最小均方误差、分式规划和流形优化的交替优化算法,将非凸优化问题转化为两个子问题并利用迭代进行求解。仿真结果表明,所提方案对解决该问题的有效性和对用户加权和速率在较低迭代次数下达到收敛,并且可使用户的加权和速率上限提升0.86 bit/(s·Hz)和使系统探测更具方向性。
  • 图  1  RIS辅助下的DFRC系统

    图  2  基站、RIS和小区位置仿真图

    图  3  不同$ \rho $下迭代算法的收敛性能

    图  4  反射元素的数量对波束方向图的影响

    图  5  反射元素的数量对系统性能的影响

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出版历程
  • 收稿日期:  2022-12-13
  • 修回日期:  2023-04-24
  • 网络出版日期:  2023-05-20
  • 刊出日期:  2024-01-17

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