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WiFi Fingerprint Based Indoor Positioning Systems Using Estimated Reference Locations

Myat Hsu AUNG, Hiroshi TSUTSUI, Yoshikazu MIYANAGA

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Summary :

In this paper, we propose a WiFi-based indoor positioning system using a fingerprint method, whose database is constructed with estimated reference locations. The reference locations and their information, called data sets in this paper, are obtained by moving reference devices at a constant speed while gathering information of available access points (APs). In this approach, the reference locations can be estimated using the velocity without any precise reference location information. Therefore, the cost of database construction can be dramatically reduced. However, each data set includes some errors due to such as the fluctuation of received signal strength indicator (RSSI) values, the device-specific WiFi sensitivities, the AP installations, and removals. In this paper, we propose a method to merge data sets to construct a consistent database suppressing such undesired effects. The proposed approach assumes that the intervals of reference locations in the database are constant and that the fingerprint for each reference location is calculated from multiple data sets. Through experimental results, we reveal that our approach can achieve an accuracy of 80%. We also show a detailed discussion on the results related parameters in the proposed approach.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E103-A No.12 pp.1483-1493
Publication Date
2020/12/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.2020SMP0024
Type of Manuscript
Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category
WiFi

Authors

Myat Hsu AUNG
  Hokkaido University
Hiroshi TSUTSUI
  Hokkaido University
Yoshikazu MIYANAGA
  Hokkaido University

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