Projekte pro Jahr
Abstract
Indoor localization systems based on Ultra-WideBand (UWB) technology can typically achieve cm-level accuracy, but their performance degrades in Non-Line-of-Sight (NLoS) conditions. To cope with this problem, Machine Learning
(ML) techniques have been applied to detect such NLoS conditions and adapt the localization algorithm accordingly. However, such ML techniques are typically optimized for accuracy, resulting in computationally-complex models that cannot be run on resource-constrained UWB devices. In this paper, we study and
propose methods to reduce the computational complexity of NLoS classification models by applying ML-based feature selection and by reducing the window length of the channel impulse response for feature extraction. Specifically, we consider 29 features and study the effect of feature selection across five different datasets to obtain generalizable results. We show that we can extract two sets
of only 3 and 8 features, which result in tiny ML models (smaller than 1 kB), and low computation times (3.6 ms and 27.7 ms on a 80 MHz ESP8266 microcontroller, respectively). This allows a reduction of the runtime by more than 90% compared to the state of the art, while still maintaining an average classification accuracy above 85% across all five datasets.
(ML) techniques have been applied to detect such NLoS conditions and adapt the localization algorithm accordingly. However, such ML techniques are typically optimized for accuracy, resulting in computationally-complex models that cannot be run on resource-constrained UWB devices. In this paper, we study and
propose methods to reduce the computational complexity of NLoS classification models by applying ML-based feature selection and by reducing the window length of the channel impulse response for feature extraction. Specifically, we consider 29 features and study the effect of feature selection across five different datasets to obtain generalizable results. We show that we can extract two sets
of only 3 and 8 features, which result in tiny ML models (smaller than 1 kB), and low computation times (3.6 ms and 27.7 ms on a 80 MHz ESP8266 microcontroller, respectively). This allows a reduction of the runtime by more than 90% compared to the state of the art, while still maintaining an average classification accuracy above 85% across all five datasets.
Originalsprache | englisch |
---|---|
Titel | Proceedings of the 19th International Conference on Mobility, Sensing, and Networking (MSN) |
Herausgeber (Verlag) | Institute of Electrical and Electronics Engineers |
Publikationsstatus | Angenommen/In Druck - 14 Dez. 2023 |
Fields of Expertise
- Information, Communication & Computing
Fingerprint
Untersuchen Sie die Forschungsthemen von „Impact of Feature Selection and CIR Window Length on NLoS Classification for UWB Systems“. Zusammen bilden sie einen einzigartigen Fingerprint.Projekte
- 2 Laufend
-
ENHANCE-UWB - Bewertung und Verbesserung der Lokalisierung- und Kommunikationsleistung von UWB Systemen unter harschen Umgebungsbedingungen.
Boano, C. A., Römer, K. U., Stocker, M. & Krisper, M.
1/09/21 → 31/08/24
Projekt: Forschungsprojekt
-
Intelligent & Networked Embedded Systems
Boano, C. A., Römer, K. U., Schuß, M., Cao, N., Saukh, O., Hofmann, R., Stocker, M., Schuh, M. P., Papst, F., Salomon, E., Brunner, H., Gallacher, M., Mohamed Hydher, M. H., Wang, D., Corti, F., Krisper, M., Basic, F. & Petrovic, K.
1/09/13 → …
Projekt: Arbeitsgebiet