Access Point topology evaluation and optimization based on Cramér-Rao Lower Bound for WLAN indoor positioning
Laitinen, Elina; Lohan, Elena-Simona (2016-06-28)
Laitinen, Elina
Lohan, Elena-Simona
IEEE
28.06.2016
2016 International Conference on Localization and GNSS (ICL-GNSS)
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201609274554
https://urn.fi/URN:NBN:fi:tty-201609274554
Kuvaus
Peer reviewed
Tiivistelmä
WLAN Access Point network is typically optimized for communication scope, and not for localization. It is thus important to understand the positioning accuracy limits under a certain given Access Point topology and to be able to make design recommendations if the Access Point topology can be adapted better for the navigation needs. This paper calculates a Cramér-Rao Lower Bound -based criterion for Received Signal Strength -based positioning. Two study cases are presented about how the proposed criterion can be used to choose the optimal Access Point density and the optimal Access Point topology in a network designed for positioning purposes. In addition, our Cramér-Rao Lower Bound-based criterion can also be used to estimate the expected accuracy bound in an existing network, based on its underlying Access Point density or topology. Measurement-based results are used to verify our proposed approach.
Kokoelmat
- TUNICRIS-julkaisut [16654]