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Machine learning enabled tools and methods for indoor localization using low power wireless network
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DOI：10.1016/j.iot.2020.100300.png)
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Abstract
En 中文
In this paper, we propose a framework for the indoor localization in non-line-of-sight (NLoS) conditions using partial knowledge of the channel state information (CSI) obtained from low power wide area (LPWA) radios. The framework is based on NLoS CSI classification using machine learning (ML) and deep learning (DL) models that leverage measurements using end-to-end LoRaWAN network. The measurement set-up provides access to not only the sensor data but also to the physical layer metrics such as the receiver signal strength (RSS), spreading factor (SF), and the frequency hoping signature to name a few. Since LoRa is based on narrow band spread spectrum modulation techniques derived from chirp spread spectrum technology, the CSI are partial in nature. We demonstrate that the partial CSI with frequency hopping signature can be efficiently exploited to predict indoor location with accuracy of more than 98% using a multilayer neural network (MNN). (C) 2020 Elsevier B.V. All rights reserved.
Keywords:
Low power wide area (LPWA)
LoRaWAN
Indoor localization
Deep learning (DL)
Machine learning (ML)
WiFi
Receiver signal strength (RSS)
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