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2008

Location Fingerprinting In A Decorrelated Space

9 years 9 months ago
Location Fingerprinting In A Decorrelated Space
We present a novel approach to the problem of the indoor localization in wireless environments. The main contribution of this paper is four folds: (a) We show that, by projecting the measured signal into a decorrelated signal space, the positioning accuracy is improved since the cross correlation between each AP is reduced. (b) We demonstrate that this novel approach achieves a more efficient information compaction and provides a better scheme to reduce online computation. The drawback of AP selection techniques is overcome since we reduce the dimensionality by combing features. Each component in the decorrelated space is the linear combination of all APs. Therefore a more efficient mechanism is provided to utilize information of all APs while reducing the computational complexity. (c) Experimental results show that the size of training samples can be greatly reduced in the decorrelated space. That is, fewer human efforts are required for developing the system. (d) We carry out compari...
Shih-Hau Fang, Tsung-Nan Lin, Po-Chiang Lin
Added 29 Dec 2010
Updated 29 Dec 2010
Type Journal
Year 2008
Where TKDE
Authors Shih-Hau Fang, Tsung-Nan Lin, Po-Chiang Lin
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