Received Signal Strength models for WLAN and BLE-based indoor positioning in multi-floor buildings
Lohan,Elena-Simona; Talvitie,Jukka; Figueiredo e Silva,Pedro; Nurminen,Henri; Ali-Löytty,Simo; Piche,Robert (2015-06-23)
Lohan,Elena-Simona
Talvitie,Jukka
Figueiredo e Silva,Pedro
Nurminen,Henri
Ali-Löytty,Simo
Piche,Robert
IEEE
23.06.2015
International Conference on Localization and GNSS (ICL-GNSS)
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Julkaisun pysyvä osoite on
http://urn.fi/URN:NBN:fi:tty-201603013609
http://urn.fi/URN:NBN:fi:tty-201603013609
Kuvaus
Peer reviewed
Tiivistelmä
This paper investigates the similarities and differences of the signal strength fluctuations and positioning accuracy in indoor scenarios for three types of wireless area networks: two Wireless Local Area Networks (WLANs) at 2.4 GHz and 5 GHz frequency, respectively, and one Wireless Personal Area Network (WPAN), namely the Bluetooth Low Energy (BLE). Two path-loss models based on weighted centroids and non-negative least squares estimation are presented: one including a floor loss factor, and the other one ignoring the floor losses, and the three signal types are compared in terms of the path-loss parameters, channel fluctuations and positioning accuracy, namely the distance errors and floor detection probabilities. The comparison is done based on real-field measurement data collected from a university building in Tampere, Finland. It is shown that all these three signal types have similar shadowing variances and close path-loss parameter values, and that a path-loss model considering floor losses gives the best floor detection probability, but not necessarily the smallest distance error.
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