Projects per year
Abstract
For time-of-flight-based wireless positioning systems operating in (dense) multipath propagation channels, the accuracy is severely influenced by the signal bandwidth, because the dense multipath component (DMC) interferes with the desired, information-bearing line-of-sight (LoS) signal. Several such systems make use of bandwidth-limited frequency resources, e.g. the industrial, scientific and medical (ISM) bands, therefore the achievable position estimation accuracy is limited. In this paper, we propose a model-based delay-estimation method which takes into account a parametric model of the DMC and thus exploits the signal energy carried in the DMC. The resulting algorithm exhibits an enhanced delay estimation accuracy and remarkable robustness in non-LoS situations. The algorithm is benchmarked against a maximum likelihood (ML) estimator not incorporating a model for the DMC and against the estimated Cramér-Rao lower bound (CRLB) in presence of DMC. Results show a significant performance gain for scenarios where the conventional ML estimator performs poorly. An evaluation of measurement data validates the simulation, showing a root-mean-square error (RMSE) of 33.4 cm compared to 1.89 m for the conventional ML estimator, at a signal bandwidth of 80 MHz.
Original language | English |
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Title of host publication | 2022 IEEE 23rd International Workshop on Signal Processing Advances in Wireless Communication, SPAWC 2022 |
Publisher | IEEE Xplore |
Pages | 1-5 |
Number of pages | 5 |
ISBN (Electronic) | 9781665494557 |
ISBN (Print) | 978-1-6654-9456-4 |
DOIs | |
Publication status | Published - 6 Jul 2022 |
Event | 23rd IEEE International Workshop on Signal Processing Advances in Wireless Communication: SPAWC 2022 - Oulu, Finland Duration: 4 Jul 2022 → 6 Jul 2022 |
Conference
Conference | 23rd IEEE International Workshop on Signal Processing Advances in Wireless Communication |
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Country/Territory | Finland |
City | Oulu |
Period | 4/07/22 → 6/07/22 |
Keywords
- Cramér-Rao lower bound
- delay estimation
- Indoor localization
- ranging
- time of flight
ASJC Scopus subject areas
- Information Systems
- Electrical and Electronic Engineering
- Computer Science Applications
Projects
- 1 Active
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CD-Laboratory for Location-aware Electronic Systems
Witrisal, K., Grebien, S. J., Fuchs, A., Wilding, T., Venus, A. & Wielandner, L.
1/01/18 → 31/12/24
Project: Research project
Activities
- 1 Poster presentation
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Time-of-Arrival Estimation for Positioning in Bandwidth-Limited Dense Multipath Channels
Andreas Fuchs (Speaker)
5 Jul 2022Activity: Talk or presentation › Poster presentation › Science to science