基于倍数的常量模块波形设计的交替方向方法,用于双功能雷达通信系统
Ahmed Saleem1, Abdul Basit1, Muhammad Fahad Munir1
1Department of Electrical & Computer Engineering, Faculty of Engineering & Technology, International Islamic University, Islamabad 44100, Pakistan.
Entropy (Basel, Switzerland)
|July 29, 2023
概括
本研究介绍了使用MIMO的双功能雷达通信 (DFRC) 系统的恒模波形. 新的波形改善了雷达检测和通信位错误率,同时尽量减少干扰.
科学领域:
- 电气工程 电气工程
- 信号处理 信号处理
- 无线通信无线通信
背景情况:
- 双功能雷达通信系统 (DFRC) 集成传感和通信功能.
- 多输入多输出 (MIMO) 配置可以提高空间分辨率和链接可靠性.
- 恒模波形对于DFRC的功率效率和硬件简单性至关重要.
研究的目的:
- 在远场场景中为基于MIMO的DFRC系统设计恒模波形.
- 为了尽量减少干扰功率,同时坚持恒定模量约束.
- 为了实现雷达和通信功能所需的光束模式.
主要方法:
- 为波形合成制定一个非凸的优化问题.
- 使用乘数 (ADMM) 算法的交替方向方法进行代解决方案.
- 用高收益雷达和通信光束以及低侧叶进行目标光束模式的近似.
主要成果:
- 设计的波形实现了高收益雷达光束和略高收益通信光束.
- 波形保持低侧叶水平,这对于干扰减轻至关重要.
- 提高了雷达的检测概率,并降低了通信的比特错误率 (BER).
结论:
- 提出的基于ADMM的方法有效地为DFRC-MIMO系统设计恒模波形.
- 设计的波形为雷达和通信性能提供了有利的权衡.
- 模拟结果验证了拟议的波形设计方法的有效性.
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