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WiFi fingerprint indoor positioning system using probability distribution comparison
KTH, School of Electrical Engineering (EES).
KTH, School of Electrical Engineering (EES), Signal Processing.
2012 (English)In: Acoustics, Speech and Signal Processing (ICASSP), 2012 IEEE International Conference on, IEEE , 2012, 2301-2304 p.Conference paper, Published paper (Refereed)
Abstract [en]

Positioning services are increasingly used for applications such as navigation, advertising and social media. While outdoor navigation based on GPS and/or cellular systems works well, indoor navigation is a much tougher challenge. This paper presents a new indoor positioning method based on Wi-Fi fingerprints, i.e. RSSI measurements from multiple Wi-Fi access points. During an offline phase, fingerprints are collected at known positions in the building. This database of locations and the associated fingerprints are called the radio map. In the online mode, the current Wi-Fi fingerprint probability distributions are compared with those of the radio map. The user location is estimated by calculating a weighted average of the three offline positions that best match the online measurements. Experiments show that our technique is superior to other proposed methods and reaches a median error of 2.4m.

Place, publisher, year, edition, pages
IEEE , 2012. 2301-2304 p.
Series
IEEE International Conference on Acoustics, Speech and Signal Processing. Proceedings, ISSN 1520-6149
Keyword [en]
Bhattacharyya distance, Indoor positioning, Probability distribution, Signal strength fingerprint, Wireless LAN
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-104956DOI: 10.1109/ICASSP.2012.6288374Scopus ID: 2-s2.0-84867621369ISBN: 978-146730046-9 (print)OAI: oai:DiVA.org:kth-104956DiVA: diva2:570402
Conference
2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012, 25 March 2012 through 30 March 2012, Kyoto
Funder
ICT - The Next Generation
Note

QC 20121119

Available from: 2012-11-19 Created: 2012-11-14 Last updated: 2013-04-15Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf