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An Improved Neural Network Training Algorithm for Wi-Fi Fingerprinting Positioning
Department of Land Surveying and Geo-informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
CIRRELT & Department of Mathematics and Industrial Engineering, Ecole Polytechnique de Montreal, P.O. Box 6079, Station Centre-Ville, Montréal, PQ H3C 3A7, Canada
* Author to whom correspondence should be addressed.
Received: 2 July 2013; in revised form: 14 August 2013 / Accepted: 14 August 2013 / Published: 3 September 2013
Abstract: Ubiquitous positioning provides continuous positional information in both indoor and outdoor environments for a wide spectrum of location based service (LBS) applications. With the rapid development of the low-cost and high speed data communication, Wi-Fi networks in many metropolitan cities, strength of signals propagated from the Wi-Fi access points (APs) namely received signal strength (RSS) have been cleverly adopted for indoor positioning. In this paper, a Wi-Fi positioning algorithm based on neural network modeling of Wi-Fi signal patterns is proposed. This algorithm is based on the correlation between the initial parameter setting for neural network training and output of the mean square error to obtain better modeling of the nonlinear highly complex Wi-Fi signal power propagation surface. The test results show that this neural network based data processing algorithm can significantly improve the neural network training surface to achieve the highest possible accuracy of the Wi-Fi fingerprinting positioning method.
Keywords: indoor positioning; neural network; Wi-Fi fingerprinting
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MDPI and ACS Style
Mok, E.; Cheung, B.K. An Improved Neural Network Training Algorithm for Wi-Fi Fingerprinting Positioning. ISPRS Int. J. Geo-Inf. 2013, 2, 854-868.
Mok E, Cheung BK. An Improved Neural Network Training Algorithm for Wi-Fi Fingerprinting Positioning. ISPRS International Journal of Geo-Information. 2013; 2(3):854-868.
Mok, Esmond; Cheung, Bernard K. 2013. "An Improved Neural Network Training Algorithm for Wi-Fi Fingerprinting Positioning." ISPRS Int. J. Geo-Inf. 2, no. 3: 854-868.