Hybrid Beamforming for Wideband Millimeter Wave MIMO Integrated Sensing and Communications

IF 3.7 3区 计算机科学 Q2 TELECOMMUNICATIONS
Junpeng Guo;Chenhao Qi
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引用次数: 0

Abstract

In this letter, we propose a true-time-delayer network assisted hybrid beamforming scheme for wideband millimeter wave multiple-input multiple-output integrated sensing and communications. By jointly optimizing the digital beamformer, the true-time-delayer network and the phase shifter network, we aim at making the sum of beam patterns across all subcarriers approach a predefined sensing beam pattern, subject to the constraints of the signal-to-interference-plus-noise ratio requirements of communication users and the maximum transmit power of the base station. To improve the design flexibility, the sensing beam pattern is distributed among different subcarriers for optimization, with phase vectors introduced to transform the modulus summation into a linear summation. Additionally, by decoupling the multi-variable constraint, we employ the alternating direction method of multipliers to decompose the original problem into manageable subproblems, which are iteratively optimized. Simulation results demonstrate that the proposed scheme outperforms existing hybrid beamforming schemes in terms of beam pattern and sensing performance.
宽带毫米波MIMO集成传感与通信的混合波束形成
在这封信中,我们提出了一种用于宽带毫米波多输入多输出集成传感和通信的实时延迟网络辅助混合波束形成方案。通过对数字波束形成器、真时延网络和移相网络进行联合优化,在满足通信用户信噪比要求和基站最大发射功率的约束下,使所有子载波波束方向图之和接近于预定义的传感波束方向图。为了提高设计的灵活性,将传感波束方向图分布在不同的子载波上进行优化,并引入相位矢量将模量求和转化为线性求和。此外,通过解耦多变量约束,采用乘数交替方向法将原问题分解为可管理的子问题,并进行迭代优化。仿真结果表明,该方案在波束方向和传感性能方面都优于现有的混合波束形成方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
IEEE Communications Letters
IEEE Communications Letters 工程技术-电信学
CiteScore
8.10
自引率
7.30%
发文量
590
审稿时长
2.8 months
期刊介绍: The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.
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