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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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/22/7496 |
| _version_ | 1797508489307750400 |
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| author | Sahil Waqar Matthias Pätzold |
| author_facet | Sahil Waqar Matthias Pätzold |
| author_sort | Sahil Waqar |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T05:04:42Z |
| format | Article |
| id | doaj.art-0e7a1f24fbcb464599a422216f926454 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T05:04:42Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-0e7a1f24fbcb464599a422216f9264542023-11-23T01:24:16ZengMDPI AGSensors1424-82202021-11-012122749610.3390/s21227496Interchannel Interference and Mitigation in Distributed MIMO RF SensingSahil Waqar0Matthias Pätzold1Faculty of Engineering and Science, University of Agder, 4630 Kristiansand, NorwayFaculty of Engineering and Science, University of Agder, 4630 Kristiansand, NorwayIn 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.https://www.mdpi.com/1424-8220/21/22/7496interchannel interferencedistributed MIMO3D channel modelsensor networkmillimeter wave (mm-Wave)FMCW |
| spellingShingle | Sahil Waqar Matthias Pätzold Interchannel Interference and Mitigation in Distributed MIMO RF Sensing Sensors interchannel interference distributed MIMO 3D channel model sensor network millimeter wave (mm-Wave) FMCW |
| title | 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_short | Interchannel Interference and Mitigation in Distributed MIMO RF Sensing |
| title_sort | interchannel interference and mitigation in distributed mimo rf sensing |
| topic | interchannel interference distributed MIMO 3D channel model sensor network millimeter wave (mm-Wave) FMCW |
| url | https://www.mdpi.com/1424-8220/21/22/7496 |
| work_keys_str_mv | AT sahilwaqar interchannelinterferenceandmitigationindistributedmimorfsensing AT matthiaspatzold interchannelinterferenceandmitigationindistributedmimorfsensing |