An Overview of Indoor Positioning Technology Based on Wi-Fi Channel State Information

CHEN Ruizhi; YE Feng

doi:10.13203/j.whugis20180176

Volume 43 Issue 12

Dec. 2018

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Geomatics and Information Science of Wuhan University > 2018 > 43(12): 2064-2070. > DOI: 10.13203/j.whugis20180176

CHEN Ruizhi, YE Feng. An Overview of Indoor Positioning Technology Based on Wi-Fi Channel State Information[J]. Geomatics and Information Science of Wuhan University, 2018, 43(12): 2064-2070. DOI: 10.13203/j.whugis20180176

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An Overview of Indoor Positioning Technology Based on Wi-Fi Channel State Information

CHEN Ruizhi^1,,
YE Feng^1, ,

1.
State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China

Funds:

The National Key Research and Development Program of China 2016YFB0502200

The National Key Research and Development Program of China 2016YFB0502201

the National Natural Science Foundation of China 91638203

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Author Bio:
CHEN Ruizhi, PhD, professor, majors in ubiquitous positioning, mobile geospatial computing and satellite navigation. E-mail: ruizhi.chen@whu.edu.cn
Corresponding author:
YE Feng, PhD candidate. E-mail: yefeng92@whu.edu.cn
Received Date: May 14, 2018
Published Date: December 04, 2018

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Abstract

Abstract

Indoor positioning is currently a research hot topic for industrial and scientific communities. Wi-Fi signal has been a common positioning signal adapted researchers. Received signal strength indicator is a traditional measurement used for indoor positioning. It can be easily affected by many factors such as the change of environment. Therefore, it is difficult to achieve such an accuracy that can be used in practice and hard to deploy the positioning solution in a large-scale. More and more resear-chers are now focusing on using channel state information as the measurement, which contains an essential description of Wi-Fi signal propagation and provides more details about the communication channel. This information can be transformed to a useful measurement for positioning. In this paper, we introduce the fundamental description of channel state information and classify the positioning approaches into three categories, which are fingerprinting-based, angle of arrival-based and ranging-based, respectively. The current states of these technologies have been reviewed in details, and the pros and cons have been identified and compared. We conclude the paper with a discussion about the directions in this field.
- Wi-Fi,
- channel state information,
- indoor positioning,
- fingerprinting

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References

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An Overview of Indoor Positioning Technology Based on Wi-Fi Channel State Information

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