6G RIS-aided Single-LEO Localization with Slow and Fast Doppler Effects
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910650755710976 |
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| author | Saleh, Sharief Keskin, Musa Furkan Priyanto, Basuki Beale, Martin Zheng, Pinjun Al-Naffouri, Tareq Y. Seco-Granados, Gonzalo Wymeersch, Henk |
| author_facet | Saleh, Sharief Keskin, Musa Furkan Priyanto, Basuki Beale, Martin Zheng, Pinjun Al-Naffouri, Tareq Y. Seco-Granados, Gonzalo Wymeersch, Henk |
| contents | 6G networks aim to enable applications like autonomous driving by providing complementary localization services through key technologies such as non-terrestrial networks (NTNs) with low Earth orbit (LEO) satellites and reconfigurable intelligent surfaces (RIS). Prior research in 6G localization using single LEO, multi-LEO, and multi-LEO multi-RIS setups has limitations: single LEO lacks the required accuracy, while multi-LEO/RIS setups demand many visible satellites and RISs, which is not always feasible in practice. This paper explores the novel problem of localization with a single LEO satellite and a single RIS, bridging these research areas. We present a comprehensive signal model accounting for user carrier frequency offset (CFO), clock bias, and fast and slow Doppler effects. Additionally, we derive a low-complexity estimator that achieves theoretical bounds at high signal-to-noise ratios (SNR). Our results demonstrate the feasibility and accuracy of RIS-aided single-LEO localization in 6G networks and highlight potential research directions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_11010 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | 6G RIS-aided Single-LEO Localization with Slow and Fast Doppler Effects Saleh, Sharief Keskin, Musa Furkan Priyanto, Basuki Beale, Martin Zheng, Pinjun Al-Naffouri, Tareq Y. Seco-Granados, Gonzalo Wymeersch, Henk Signal Processing 6G networks aim to enable applications like autonomous driving by providing complementary localization services through key technologies such as non-terrestrial networks (NTNs) with low Earth orbit (LEO) satellites and reconfigurable intelligent surfaces (RIS). Prior research in 6G localization using single LEO, multi-LEO, and multi-LEO multi-RIS setups has limitations: single LEO lacks the required accuracy, while multi-LEO/RIS setups demand many visible satellites and RISs, which is not always feasible in practice. This paper explores the novel problem of localization with a single LEO satellite and a single RIS, bridging these research areas. We present a comprehensive signal model accounting for user carrier frequency offset (CFO), clock bias, and fast and slow Doppler effects. Additionally, we derive a low-complexity estimator that achieves theoretical bounds at high signal-to-noise ratios (SNR). Our results demonstrate the feasibility and accuracy of RIS-aided single-LEO localization in 6G networks and highlight potential research directions. |
| title | 6G RIS-aided Single-LEO Localization with Slow and Fast Doppler Effects |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2410.11010 |