Zengshan Tian1, Weiqin Yang1, Yue Jin1, Liangbo Xie1, *, Zhengwen Huang2
CMC-Computers, Materials & Continua, Vol.62, No.2, pp. 861-876, 2020, DOI:10.32604/cmc.2020.07297
Abstract With the popularity of indoor wireless network, device-free indoor
localization has attracted more and more attention. Unlike device-based localization
where the target is required to carry an active transmitter, their frequent signal scanning
consumes a large amount of energy, which is inconvenient for devices with limited
energy. In this work, we propose the MFPL, device-free localization (DFL) system
based on WiFi distance measurement. First, we combine multi-subcarrier characteristic
of Channel State Information (CSI) with classical Fresnel reflection model to get the
linear relationship between the change of the length of reflection path and the
subcarrier phase difference. Then we calculate… More >
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