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arXiv 2402.07644eess.SP
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Massive MIMO网络中的定位:从近场到远场

Localization in Massive MIMO Networks: From Near-Field to Far-Field

Parisa Ramezani, Özlem Tuğfe Demir, Emil Björnson

AI总结:

本章介绍了MUSIC和ESPRIT算法的基础及其在单天线阵列远场与近场源定位中的变体,并通过数值示例验证了方法性能。

摘要:

源定位是基于天线阵列中不同天线接收到的信号来估计信号源位置的过程。它具有广泛的应用,涵盖雷达系统、水下声学到无线通信网络。基于子空间的方法因其高精度而成为最有效的源定位技术之一,其中Multiple SIgnal Classification (MUSIC)和Estimation of Signal Parameters by Rotational Invariance Techniques (ESPRIT)是该类别中的两种杰出方法。这些技术利用了这样一个事实:接收信号协方差矩阵的特征向量所张成的空间可以分为信号子空间和噪声子空间,且二者相互正交。这些方法最初是为远场源定位设计的,但经过多次修改,也能适应近场场景。本章旨在介绍MUSIC和ESPRIT算法的基础,并介绍它们在单天线阵列远场和近场定位中的一些变体。我们进一步提供数值示例来展示所提方法的性能。

英文摘要:

Source localization is the process of estimating the location of signal sources based on the signals received at different antennas of an antenna array. It has diverse applications, ranging from radar systems and underwater acoustics to wireless communication networks. Subspace-based approaches are among the most effective techniques for source localization due to their high accuracy, with Multiple SIgnal Classification (MUSIC) and Estimation of Signal Parameters by Rotational Invariance Techniques (ESPRIT) being two prominent methods in this category. These techniques leverage the fact that the space spanned by the eigenvectors of the covariance matrix of the received signals can be divided into signal and noise subspaces, which are mutually orthogonal. Originally designed for far-field source localization, these methods have undergone several modifications to accommodate near-field scenarios as well. This chapter aims to present the foundations of MUSIC and ESPRIT algorithms and introduce some of their variations for both far-field and near-field localization by a single array of antennas. We further provide numerical examples to demonstrate the performance of the presented methods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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