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Issue No. 04 - April (2013 vol. 24)
ISSN: 1045-9219
pp: 839-848
Chenshu Wu , Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing, China
Zheng Yang , Sch. of Software, Tsinghua Univ., Beijing, China
Yunhao Liu , Sch. of Software, Tsinghua Univ., Beijing, China
Wei Xi , Dept. of Comput. Sci. & Technol., Xi'an Jiaotong Univ., Xi'an, China
Indoor localization is of great importance for a range of pervasive applications, attracting many research efforts in the past two decades. Most radio-based solutions require a process of site survey, in which radio signatures are collected and stored for further comparison and matching. Site survey involves intensive costs on manpower and time. In this work, we study unexploited RF signal characteristics and leverage user motions to construct radio floor plan that is previously obtained by site survey. On this basis, we design WILL, an indoor localization approach based on off-the-shelf WiFi infrastructure and mobile phones. WILL is deployed in a real building covering over 1600 m2, and its deployment is easy and rapid since site survey is no longer needed. The experiment results show that WILL achieves competitive performance comparing with traditional approaches.
wireless LAN, indoor radio, mobile handsets, radio networks, ubiquitous computing, mobile phones, WILL, wireless indoor localization, site survey, pervasive applications, Wi-Fi infrastructure, Databases, Wireless communication, IEEE 802.11 Standards, Wireless sensor networks, Mobile handsets, Accelerometers, Buildings, site survey, Wireless, indoor localization, fingerprint

Zheng Yang, Chenshu Wu, Yunhao Liu and Wei Xi, "WILL: Wireless Indoor Localization without Site Survey," in IEEE Transactions on Parallel & Distributed Systems, vol. 24, no. , pp. 839-848, 2013.
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