Journal
SIGNAL PROCESSING
Volume 131, Issue -, Pages 235-244Publisher
ELSEVIER
DOI: 10.1016/j.sigpro.2016.07.005
Keywords
Fingerprinting localization; Location-based service (LBS); Received signal strength indicator (RSSI); Pathloss model; Gaussian Process; Non-parametric model; Machine learning
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Localization has attracted a lot of research effort in the last decade due to the explosion of location based service (LBS). In particular, wireless fingerprinting localization has received much attention due to its simplicity and compatibility with existing hardware. In this work, we take a closer look at the underlying aspects of wireless fingerprinting localization. First, we review the various methods to create a radiomap. In particular, we look at the traditional fingerprinting method which is based purely on measurements, the parametric pathloss regression model and the non-parametric Gaussian Process (GP) regression model. Then, based on these three methods and measurements from a real world deployment, the various aspects such as the density of access points (APs) and impact of an outdated signature map which affect the performance of fingerprinting localization are examined. At the end of the paper, the audiences should have a better understanding of what to expect from fingerprinting localization in a real world deployment. (C) 2016 Published by Elsevier B.V.
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