Downlink Single-Snapshot Localization and Mapping with a Single-Antenna Receiver
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| Název: | Downlink Single-Snapshot Localization and Mapping with a Single-Antenna Receiver |
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| Autoři: | Fascista, Alessio, Coluccia, Angelo, Wymeersch, Henk, 1976, Seco-Granados, G. |
| Zdroj: | Multidimensionell signalbehandling med frekvenskammar IEEE Transactions on Wireless Communications. 20(7):4672-4684 |
| Témata: | MIMO, multiple-input single-output (MISO), AOD, localization, mmWave, SLAM, 5G cellular networks, mapping |
| Popis: | 5G mmWave MIMO systems enable accurate estimation of the user position and mapping of the radio environment using a single snapshot when both the base station (BS) and user are equipped with large antenna arrays. However, massive arrays are initially expected only at the BS side, likely leaving users with one or very few antennas. In this paper, we propose a novel method for single-snapshot localization and mapping in the more challenging case of a user equipped with a single-antenna receiver. The joint maximum likelihood (ML) estimation problem is formulated and its solution formally derived. To avoid the burden of a full-dimensional search over the space of the unknown parameters, we present a novel practical approach that exploits the sparsity of mmWave channels to compute an approximate joint ML estimate. A thorough analysis, including the derivation of the Cramér-Rao lower bounds, reveals that accurate localization and mapping can be achieved also in a MISO setup even when the direct line-of-sight path between the BS and the user is severely attenuated. |
| Popis souboru: | electronic |
| Přístupová URL adresa: | https://research.chalmers.se/publication/523304 https://research.chalmers.se/publication/523304/file/523304_Fulltext.pdf |
| Databáze: | SwePub |
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Nájsť tento článok vo Web of Science | Abstrakt: | 5G mmWave MIMO systems enable accurate estimation of the user position and mapping of the radio environment using a single snapshot when both the base station (BS) and user are equipped with large antenna arrays. However, massive arrays are initially expected only at the BS side, likely leaving users with one or very few antennas. In this paper, we propose a novel method for single-snapshot localization and mapping in the more challenging case of a user equipped with a single-antenna receiver. The joint maximum likelihood (ML) estimation problem is formulated and its solution formally derived. To avoid the burden of a full-dimensional search over the space of the unknown parameters, we present a novel practical approach that exploits the sparsity of mmWave channels to compute an approximate joint ML estimate. A thorough analysis, including the derivation of the Cramér-Rao lower bounds, reveals that accurate localization and mapping can be achieved also in a MISO setup even when the direct line-of-sight path between the BS and the user is severely attenuated. |
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| ISSN: | 15582248 15361276 |
| DOI: | 10.1109/TWC.2021.3061407 |