A novel fingerprint location method using ray-tracing

Authors:
P. S. Maher;R. A. Malaney
Affiliations:
The University of New South Wales, Sydney, Australia;The University of New South Wales, Sydney, Australia
Venue:
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Year:
2009

Citing 5
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Abstract

Mobile location estimation via the use of a spatially-dependent signal database is of growing importance. However, this location estimation method usually requires an a priori experimental measurement campaign. To overcome this drawback we propose here a new method of location estimation via the real-time creation of a virtual signal database. The virtual database is created on-demand by an optimized ray-tracing algorithm embedded on the user device. We explore how the creation of the virtual database can be optimized so as to determine the required location at the lowest time-to-fix. Our results demonstrate that in current 3G cellular mobile systems, and using current mobile phone hardware, sub-50m accuracy can be achieved in less than a few seconds. Our work shows that accurate real-time location estimation via user embedded ray-tracing is now viable and can lead to more accurate solutions in a range of circumstances.