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ThinkMind // UBICOMM 2013, The Seventh International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies // View article ubicomm_2013_1_10_10018


Indoor Navigation by WLAN Location Fingerprinting - Reducing Training-Efforts with Interpolated Radio Map

Authors:
Roland Dutzler
Martin Ebner
Robert Brandner

Keywords: Indoor Navigation; Location Fingerprinting; WLAN; Smartphone; Log-Distance Path Loss Model

Abstract:
Due to the fact that smartphones are today already used by about one out of seven persons worldwide and their capabilities concerning hardware and sensors are growing, many different indoor navigation solutions for smartphones exist. The solution presented in this paper is based on Wireless Local Area Network Location Fingerprinting. Fingerprinting is a method where signals at a number of specific points are measured once and stored in a database that is needed to determine the position later on. Measuring each and every fingerprint makes the off-line phase a complex and very timeintensive process, especially for big buildings. The bigger the building, the higher is the effort to create the map needed for the on-line phase to determine the position of a device. In order to cope with this complexity, an approach for optimizing the off-line phase is realized. The system substantially lowers the number of positions at which fingerprint measurements have to be taken by identifying ideal positions. All other nonmeasured fingerprints are determined by using a form of the Log-Distance Path Loss Model.

Pages: 1 to 6

Copyright: Copyright (c) IARIA, 2013

Publication date: September 29, 2013

Published in: conference

ISSN: 2308-4278

ISBN: 978-1-61208-289-9

Location: Porto, Portugal

Dates: from September 29, 2013 to October 3, 2013

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