Interchannel Interference and Mitigation in Distributed MIMO RF Sensing

In this paper, we analyze and mitigate the cross-channel interference, which is found in multiple-input multiple-output (MIMO) radio frequency (RF) sensing systems. For a millimeter wave (mm-Wave) MIMO system, we present a geometrical three-dimensional (3D) channel model to simulate the time-variant...

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Autores principales:	Sahil Waqar, Matthias Pätzold
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	interchannel interference distributed MIMO 3D channel model sensor network millimeter wave (mm-Wave) FMCW Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/0e7a1f24fbcb464599a422216f926454
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spelling	oai:doaj.org-article:0e7a1f24fbcb464599a422216f9264542021-11-25T18:56:54ZInterchannel Interference and Mitigation in Distributed MIMO RF Sensing10.3390/s212274961424-8220https://doaj.org/article/0e7a1f24fbcb464599a422216f9264542021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7496https://doaj.org/toc/1424-8220In this paper, we analyze and mitigate the cross-channel interference, which is found in multiple-input multiple-output (MIMO) radio frequency (RF) sensing systems. For a millimeter wave (mm-Wave) MIMO system, we present a geometrical three-dimensional (3D) channel model to simulate the time-variant (TV) trajectories of a moving scatterer. We collected RF data using a state-of-the-art radar known as Ancortek SDR-KIT 2400T2R4, which is a frequency-modulated continuous wave (FMCW) MIMO radar system operating in the K-band. The Ancortek radar is currently the only K-band MIMO commercial radar system that offers customized antenna configurations. It is shown that this radar system encounters the problem of interference between the various subchannels. We propose an optimal approach to mitigate the problem of cross-channel interference by inducing a propagation delay in one of the channels and apply range gating. The measurement results prove the effectiveness of the proposed approach by demonstrating a complete elimination of the interference problem. The application of the proposed solution on Ancortek’s SDR-KIT 2400T2R4 allows resolving all subchannel links in a distributed MIMO configuration. This allows using MIMO RF sensing techniques to track a moving scatterer (target) regardless of its direction of motion.Sahil WaqarMatthias PätzoldMDPI AGarticleinterchannel interferencedistributed MIMO3D channel modelsensor networkmillimeter wave (mm-Wave)FMCWChemical technologyTP1-1185ENSensors, Vol 21, Iss 7496, p 7496 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	interchannel interference distributed MIMO 3D channel model sensor network millimeter wave (mm-Wave) FMCW Chemical technology TP1-1185
spellingShingle	interchannel interference distributed MIMO 3D channel model sensor network millimeter wave (mm-Wave) FMCW Chemical technology TP1-1185 Sahil Waqar Matthias Pätzold Interchannel Interference and Mitigation in Distributed MIMO RF Sensing
description	In this paper, we analyze and mitigate the cross-channel interference, which is found in multiple-input multiple-output (MIMO) radio frequency (RF) sensing systems. For a millimeter wave (mm-Wave) MIMO system, we present a geometrical three-dimensional (3D) channel model to simulate the time-variant (TV) trajectories of a moving scatterer. We collected RF data using a state-of-the-art radar known as Ancortek SDR-KIT 2400T2R4, which is a frequency-modulated continuous wave (FMCW) MIMO radar system operating in the K-band. The Ancortek radar is currently the only K-band MIMO commercial radar system that offers customized antenna configurations. It is shown that this radar system encounters the problem of interference between the various subchannels. We propose an optimal approach to mitigate the problem of cross-channel interference by inducing a propagation delay in one of the channels and apply range gating. The measurement results prove the effectiveness of the proposed approach by demonstrating a complete elimination of the interference problem. The application of the proposed solution on Ancortek’s SDR-KIT 2400T2R4 allows resolving all subchannel links in a distributed MIMO configuration. This allows using MIMO RF sensing techniques to track a moving scatterer (target) regardless of its direction of motion.
format	article
author	Sahil Waqar Matthias Pätzold
author_facet	Sahil Waqar Matthias Pätzold
author_sort	Sahil Waqar
title	Interchannel Interference and Mitigation in Distributed MIMO RF Sensing
title_short	Interchannel Interference and Mitigation in Distributed MIMO RF Sensing
title_full	Interchannel Interference and Mitigation in Distributed MIMO RF Sensing
title_fullStr	Interchannel Interference and Mitigation in Distributed MIMO RF Sensing
title_full_unstemmed	Interchannel Interference and Mitigation in Distributed MIMO RF Sensing
title_sort	interchannel interference and mitigation in distributed mimo rf sensing
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0e7a1f24fbcb464599a422216f926454
work_keys_str_mv	AT sahilwaqar interchannelinterferenceandmitigationindistributedmimorfsensing AT matthiaspatzold interchannelinterferenceandmitigationindistributedmimorfsensing
_version_	1718410505699196928

Interchannel Interference and Mitigation in Distributed MIMO RF Sensing

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