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arXiv · 2402.00329

Optimized Parameter Design for Channel State Information-Free Location Spoofing

Jianxiu Li·Urbashi Mitra
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Abstract

In this paper, an augmented analysis of a delay-angle information spoofing (DAIS) is provided for location-privacy preservation, where the location-relevant delays and angles are artificially shifted to obfuscate the eavesdropper with an incorrect physical location. A simplified misspecified Cramer-Rao bound (MCRB) is derived, which clearly manifests that not only estimation error, but also the geometric mismatch introduced by DAIS can lead to a significant increase in localization error for an eavesdropper. Given an assumption of the orthogonality among wireless paths, the simplified MCRB can be further expressed as a function of delay-angle shifts in a closed-form, which enables the more straightforward optimization of these design parameters for location-privacy enhancement. Numerical results are provided, validating the theoretical analysis and showing that the root-mean-square error for eavesdropper's localization can be more than 150 m with the optimized delay-angle shifts for DAIS.

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Jianxiu Li, Urbashi Mitra. 2024-02-01. Optimized Parameter Design for Channel State Information-Free Location Spoofing. https://arxiv.org/abs/2402.00329

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