Accurate Direct Positioning in Distributed MIMO Using Delay-Doppler Channel Measurements
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866929436282060800 |
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| author | Deutschmann, Benjamin J. B. Nelson, Christian Henriksson, Mikael Marti, Gian Kosasih, Alva Tervo, Nuutti Leitinger, Erik Tufvesson, Fredrik |
| author_facet | Deutschmann, Benjamin J. B. Nelson, Christian Henriksson, Mikael Marti, Gian Kosasih, Alva Tervo, Nuutti Leitinger, Erik Tufvesson, Fredrik |
| contents | Distributed multiple-input multiple-output (D-MIMO) is a promising technology for simultaneous communication and positioning. However, phase synchronization between multiple access points in D-MIMO is challenging and methods that function without the need for phase synchronization are highly desired. Therefore, we present a method for D-MIMO that performs direct positioning of a moving device based on the delay-Doppler characteristics of the channel state information (CSI). Our method relies on particle-filter-based Bayesian inference with a state-space model. We use recent measurements from a sub-6 GHz D-MIMO OFDM system in an industrial environment to demonstrate near-centimeter accuracy under partial line-of-sight (LoS) conditions and decimeter accuracy under fully obstructed LoS. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_15936 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Accurate Direct Positioning in Distributed MIMO Using Delay-Doppler Channel Measurements Deutschmann, Benjamin J. B. Nelson, Christian Henriksson, Mikael Marti, Gian Kosasih, Alva Tervo, Nuutti Leitinger, Erik Tufvesson, Fredrik Signal Processing Distributed multiple-input multiple-output (D-MIMO) is a promising technology for simultaneous communication and positioning. However, phase synchronization between multiple access points in D-MIMO is challenging and methods that function without the need for phase synchronization are highly desired. Therefore, we present a method for D-MIMO that performs direct positioning of a moving device based on the delay-Doppler characteristics of the channel state information (CSI). Our method relies on particle-filter-based Bayesian inference with a state-space model. We use recent measurements from a sub-6 GHz D-MIMO OFDM system in an industrial environment to demonstrate near-centimeter accuracy under partial line-of-sight (LoS) conditions and decimeter accuracy under fully obstructed LoS. |
| title | Accurate Direct Positioning in Distributed MIMO Using Delay-Doppler Channel Measurements |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2404.15936 |