A Novel Model-Based Indoor Positioning Using Signal Strength

Published

September 3, 2007

Author(s)

Kamran Sayrafian, D Kaspar

Abstract

A simple technique to estimate the position of a mobile node inside a building is based on the Received Signal Strength (RSS). In a previous publication, we investigated the feasibility of using circular array antennas and beamforming in order to enable an access point to estimate the position of a mobile inside a building. The approach utilized the two dimensional information (i.e. RSS for various azimuth directions) that is captured in a priori measured radio map. Generating these radio maps is not only extremely labor-intensive and time consuming but also sensitive to changes in the environment and possible source of interference. It would be interesting to find out if a deterministic propagation model such as ray tracing can be used to construct a radio map that effectively replaces the off-line manual measurements. In this paper, we investigate this issue and provide a novel positioning methodology that exhibits acceptable performance without the need for extensive set of measurements in the off-line mode. The performance for various parameters and building model accuracy will be presented and discussed.

Conference Location

Athens, GR

Conference Title

18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications

Pub Type

Conferences

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Keywords

Indoor Positioning, Ray-Tracing, Beamforming

Citation

Sayrafian, K. and Kaspar, D. (2007), A Novel Model-Based Indoor Positioning Using Signal Strength, 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Athens, GR, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=51187 (Accessed October 8, 2025)