Table of Contents
International Journal of Navigation and Observation
Volume 2010, Article ID 397467, 11 pages
http://dx.doi.org/10.1155/2010/397467
Research Article

On Potentials and Limitations of a Hybrid WLAN-RFID Indoor Positioning Technique

Department DIMET, Laboratory of A.R.T.S., University Mediterranea of Reggio Calabria, Loc. Feo di Vito, 89100 Reggio Calabria, Italy

Received 15 November 2009; Accepted 25 March 2010

Academic Editor: Simon Plass

Copyright © 2010 Silverio C. Spinella et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper addresses the important issue of position estimation in indoor environments. Starting point of the research is positioning techniques that exploit the knowledge of power levels of RF signals from multiple 802.11 WLAN APs (Access Points). In particular, the key idea in this paper is to enhance the performance of a WLAN fingerprinting approach by coupling it to a RFID-based procedure. WLAN and RFID technologies are synergistically used to provide a platform for a more performing positioning process, in which the very strong identification capabilities of the RFID technology allow to increase the accuracy of positioning systems via WLAN fingerprinting. The algorithm performance is assessed through general and repeatable experimental campaigns, during which the main algorithm parameters are dimensioned. The results testify both to the feasibility of the solution and to its higher accuracy (attainable at very reduced costs) compared to traditional positioning techniques.