Bistatic Doppler Frequency Estimation With Asynchronous Moving Devices for Integrated Sensing and Communications

IF 4.6 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Wireless Communications Letters Pub Date : 2024-08-28 DOI:10.1109/LWC.2024.3451298

Gianmaria Ventura;Zaman Bhalli;Michele Rossi;Jacopo Pegoraro

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Abstract

In this letter, we present for the first time a method to estimate the bistatic Doppler frequency of a target with clock asynchronous and mobile Integrated Sensing And Communication (ISAC) devices. Existing approaches have separately tackled the presence of phase offsets due to clock asynchrony or the additional Doppler shift due to device movement. However, in real ISAC scenarios, these two sources of phase nuisance are concurrently present, making the estimation of the target’s Doppler frequency particularly challenging. Our method solves the problem using the sole wireless signal at the receiver, exploiting the invariance of phase offsets across multipath components and the bistatic geometry in an original way. The proposed method is validated via simulation, exploring the impact of different system parameters. Numerical results show that our approach is a viable way of estimating Doppler frequency in bistatic asynchronous ISAC scenarios with mobile devices.

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利用异步移动设备进行双稳态多普勒频率估计，实现综合传感与通信

在这封信中，我们首次提出了一种方法，用于估算带有时钟异步和移动综合传感与通信（ISAC）设备的目标的双稳态多普勒频率。现有方法分别解决了时钟不同步导致的相位偏移或设备移动导致的额外多普勒频移问题。然而，在真实的 ISAC 场景中，这两种相位干扰源同时存在，使得目标多普勒频率的估算变得尤为困难。我们的方法利用接收器上唯一的无线信号解决了这一问题，以一种新颖的方式利用了多径分量和双稳态几何中相位偏移的不变性。我们通过模拟验证了所提出的方法，探索了不同系统参数的影响。数值结果表明，在使用移动设备的双稳态异步 ISAC 场景中，我们的方法是一种估算多普勒频率的可行方法。

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 Wireless Communications Letters Engineering-Electrical and Electronic Engineering

CiteScore

12.30

自引率

6.30%

发文量

481

期刊介绍： IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. 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 wireless communication systems.