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Communication Dans Un Congrès Année : 2021

RIS-enabled localization continuity under near-field conditions

Résumé

Reconfigurable intelligent surfaces (RISs) have the potential to enable user localization in scenarios where traditional approaches fail. Building on prior work in single-antenna RIS-enabled localization, we investigate the potential to exploit wavefront curvature in geometric near-field conditions. Via a Fisher information analysis, we demonstrate that while near-field improves localization accuracy mostly at short distances when the line-of-sight (LoS) path is present, it could still provide reasonable performance when this path is blocked by relying on a single RIS reflection. After deriving and illustrating the corresponding position error bounds as a function of key operating parameters, we discuss practical system approaches that could enable better LoS-to-NLoS positioning continuity in harsh environments.
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Dates et versions

cea-04571105 , version 1 (07-05-2024)

Identifiants

Citer

Moustafa Rahal, Benoit Denis, Kamran Keykhosravi, Bernard Uguen, Henk Wymeersch. RIS-enabled localization continuity under near-field conditions. SPAWC 2021 - 2021 IEEE 22nd International Workshop on Signal Processing Advances in Wireless Communications, Sep 2021, Lucca (Virtual event), Italy. pp.436-440, ⟨10.1109/SPAWC51858.2021.9593200⟩. ⟨cea-04571105⟩
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