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http://dx.doi.org/10.7840/kics.2013.38C.6.531

Wi-Fi Fingerprint Location Estimation System Based on Reliability  

Son, Sanghyun (부산대학교 컴퓨터공학과 임베디드시스템 연구실)
Park, Youngjoon (네오랩 컨버젼스 R&D 센터)
Kim, Beomjun (부산대학교 컴퓨터공학과 임베디드시스템 연구실)
Baek, Yunju (부산대학교 컴퓨터공학과 임베디드시스템 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38C, no.6, 2013 , pp. 531-539 More about this Journal
Abstract
Fingerprinting technique uses the radio signal strength measured reference locations is typically used, although there are many Wi-Fi based location tracking techniques. However, it needs numerous reference locations for precision and accuracy. This paper the analyzes problems of previous techniques and proposes a fingerprinting system using reliability based on a signal strength map. The system collects the signal strength data from a number of reference locations designated by the developer. And then it generates path-loss models to one of the access points for each reference location. These models calculate the predicted signal strength and reliability for a lattice. To evaluate proposed method and system performance, We perform experiments in a $20m{\times}22m$ real indoor environment installed access points. According to the result, the proposed system reduced distance error than RADAR. Comparing the existing system, it reduced about 1.74m.
Keywords
Wi-Fi; fingerprint; reliability; RSSI modeling; locating system;
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