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Access Point topology evaluation and optimization based on Cramér-Rao Lower Bound for WLAN indoor positioning

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publication2016 International Conference on Localization and GNSS (ICL-GNSS)
ISBN (Electronic)9781509017577
Publication statusPublished - 28 Jun 2016
Publication typeA4 Article in a conference publication
EventInternational Conference on Localization and GNSS -
Duration: 1 Jan 1900 → …

Publication series

ISSN (Electronic)2325-0771


ConferenceInternational Conference on Localization and GNSS
Period1/01/00 → …


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.

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