Is Centimeter Accuracy Achievable for LTE-CSI Fingerprint-Based Indoor Positioning?

Channel state information (CSI) fingerprint based indoor positioning has been extensively studied. While centimeter-level positioning accuracy has been demonstrated for Wi-Fi systems, only meter-level accuracy was reported for Long-term Evolution (LTE) systems. To investigate whether the centimeter...

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Bibliographic Details
Published in:IEEE access 2020, Vol.8, p.75249-75255
Main Authors: Wang, Yanzhao, Han, Shengqian, Tian, Yafei, Xiu, Chundi, Yang, Dongkai
Format: Article
Language:English
Subjects:
Accuracy
Channel estimation
channel state information (CSI)
Fingerprint recognition
Fingerprinting
Fingerprints
Indoor positioning
Long Term Evolution
LTE
Machine learning algorithms
OFDM
Phase distortion
Wireless fidelity
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Summary:Channel state information (CSI) fingerprint based indoor positioning has been extensively studied. While centimeter-level positioning accuracy has been demonstrated for Wi-Fi systems, only meter-level accuracy was reported for Long-term Evolution (LTE) systems. To investigate whether the centimeter accuracy is achievable or not for LTE systems, we examine the factors that affect the positioning accuracy to guide the implementation of a LTE-CSI fingerprinting system, where a novel phase compensation method is proposed to improve the CSI quality. We demonstrate for the first time that the centimeter-level positioning accuracy is achievable for LTE systems through extensive experiments.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.2988387