Privacy Preservation in MIMO-OFDM Localization Systems: A Beamforming Approach
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866913717577318400 |
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| author | Zhang, Yuchen Chen, Hui Keskin, Musa Furkan Pourafzal, Alireza Zheng, Pinjun Wymeersch, Henk Al-Naffouri, Tareq Y. |
| author_facet | Zhang, Yuchen Chen, Hui Keskin, Musa Furkan Pourafzal, Alireza Zheng, Pinjun Wymeersch, Henk Al-Naffouri, Tareq Y. |
| contents | We investigate an uplink MIMO-OFDM localization scenario where a legitimate base station (BS) aims to localize a user equipment (UE) using pilot signals transmitted by the UE, while an unauthorized BS attempts to localize the UE by eavesdropping on these pilots, posing a risk to the UE's location privacy. To enhance legitimate localization performance while protecting the UE's privacy, we formulate an optimization problem regarding the beamformers at the UE, aiming to minimize the Cramér-Rao bound (CRB) for legitimate localization while constraining the CRB for unauthorized localization above a threshold. A penalty dual decomposition optimization framework is employed to solve the problem, leading to a novel beamforming approach for location privacy preservation. Numerical results confirm the effectiveness of the proposed approach and demonstrate its superiority over existing benchmarks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_01353 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Privacy Preservation in MIMO-OFDM Localization Systems: A Beamforming Approach Zhang, Yuchen Chen, Hui Keskin, Musa Furkan Pourafzal, Alireza Zheng, Pinjun Wymeersch, Henk Al-Naffouri, Tareq Y. Signal Processing Information Theory We investigate an uplink MIMO-OFDM localization scenario where a legitimate base station (BS) aims to localize a user equipment (UE) using pilot signals transmitted by the UE, while an unauthorized BS attempts to localize the UE by eavesdropping on these pilots, posing a risk to the UE's location privacy. To enhance legitimate localization performance while protecting the UE's privacy, we formulate an optimization problem regarding the beamformers at the UE, aiming to minimize the Cramér-Rao bound (CRB) for legitimate localization while constraining the CRB for unauthorized localization above a threshold. A penalty dual decomposition optimization framework is employed to solve the problem, leading to a novel beamforming approach for location privacy preservation. Numerical results confirm the effectiveness of the proposed approach and demonstrate its superiority over existing benchmarks. |
| title | Privacy Preservation in MIMO-OFDM Localization Systems: A Beamforming Approach |
| topic | Signal Processing Information Theory |
| url | https://arxiv.org/abs/2501.01353 |