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http://dx.doi.org/10.6109/jkiice.2014.18.11.2685

Construction of a Radio map for WPS Resistant to Signal Strength Fluctuation  

Lee, Hyoun-Sup (Department of Multimedia Engineering, Dong-eui University)
Kim, Jin-Deog (Department of Computer Engineering, Dong-eui University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.18, no.11, 2014 , pp. 2685-2690 More about this Journal
Abstract
WPS determines position via a two-step process. In the construction phase, a radio map is constituted by collecting radio information signals. Positioning procedure is a step of comparing the radio signal newly acquired with the radio map. If the signals collected and the radio map are different the accuracy decreases. Even though the rate of accuracy is different according to positioning algorithms, accuracy drop is an issue common to all WPS systems. Signal strength fluctuation is caused by the malfunction of the device that receives positioning signals, obstruction and channel interference, etc. In this paper, in order to solve the problem caused by signal strength change, we propose a new radio map construction technique. The proposed method is intended to constitute a strong radio map to changes in the signal strength and updated by collecting the signal strength changes to the radio map. The use of this method is expected to enhance the accuracy of WPS by actively counteracting signal fluctuation.
Keywords
IPS; WPS; signal strength; radio map;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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