Summary
International Symposium on Antennas and Propagation
2009
Session Number:1D1
Session:
Number:1D1-3
Wireless Location Estimation Using Extended Fingerprinting Techniques in Indoor Environment
Yuta KUROSAKI, Hiroyoshi YAMADA, Yoshio YAMAGUCHI,
pp.149-152
Publication Date:2009/10/21
Online ISSN:2188-5079
Summary:
In recent years, methods of wireless location estimation in urban and indoor environment using array antenna have been attracting attention. One of the methods called location fingerprinting technique utilizes signal-subspace of received array data [1]. Terminal location is estimated by pattern matching of prepared database for the location fingerprints. This method enables us to estimate location of a terminal in NLOS environment. However, accuracy of the estimated location deteriorates when the propagation environment is varied and/or the reference data are not prepared at the location. In this report, we propose an extended fingerprinting technique based on a high dimensional signal- subspace. The proposed method uses a propagation simulator to discriminate AOA of each multipath wave and estimates the terminal location using an approximate signal-subspace spanned by mode vectors of the multipath waves. Computer simulation results are provided to show availability of the proposed technique.