Print Email Facebook Twitter Delay Estimation for Ranging and Localization Using Multiband Channel State Information Title Delay Estimation for Ranging and Localization Using Multiband Channel State Information Author Kazaz, T. (TU Delft Signal Processing Systems) Janssen, G.J.M. (TU Delft Signal Processing Systems) Romme, J.P.A. (TU Delft Signal Processing Systems; Stichting IMEC Nederland) van der Veen, A.J. (TU Delft Signal Processing Systems) Date 2022 Abstract In wireless networks, an essential step for precise range-based localization is the high-resolution estimation of multipath channel delays. The resolution of traditional delay estimation algorithms is inversely proportional to the bandwidth of the training signals used for channel probing. Considering that typical training signals have limited bandwidth, delay estimation using these algorithms often leads to poor localization performance. To mitigate these constraints, we exploit the multiband and carrier frequency switching capabilities of wireless transceivers and propose to acquire channel state information (CSI) in multiple bands spread over a large frequency aperture. The data model of the acquired measurements has a multiple shift-invariance structure, and we use this property to develop a high-resolution delay estimation algorithm. We derive the Cramér-Rao Bound (CRB) for the data model and perform numerical simulations of the algorithm using system parameters of the emerging IEEE 802.11be standard. Simulations show that the algorithm is asymptotically efficient and converges to the CRB. To validate modeling assumptions, we test the algorithm using channel measurements acquired in real indoor scenarios. From these results, it is seen that delays (ranges) estimated from multiband CSI with a total bandwidth of 320 MHz show an average RMSE of less than 0.3 ns (10 cm) in 90% of the cases. Subject Delay estimationrangingsuper resolutionsubspace fittingmultiband CSIIEEE 802.11beWiFi-7OFDM To reference this document use: http://resolver.tudelft.nl/uuid:3db92c93-f6c2-485a-9eb8-571ae7b12c1e DOI https://doi.org/10.1109/TWC.2021.3113771 ISSN 1536-1276 Source IEEE Transactions on Wireless Communications, 21 (4), 2591-2607 Part of collection Institutional Repository Document type journal article Rights © 2022 T. Kazaz, G.J.M. Janssen, J.P.A. Romme, A.J. van der Veen Files PDF Delay_Estimation_for_Rang ... mation.pdf 3.87 MB Close viewer /islandora/object/uuid:3db92c93-f6c2-485a-9eb8-571ae7b12c1e/datastream/OBJ/view