Abstract
With the rapid advancement of smartphones and other mobile devices, an ever-increasing desire for wireless indoor localization has emerged. This technology is capable of determining the position of a user or device in an indoor setting and facilitating an array of captivating applications. Due to the low cost and wide availability of WiFi, WiFi-based indoor localization has received considerable attention and has become a prominent research focus in recent times. We have distilled that an ideal WiFi-based indoor localization system is anticipated to meet three criteria: high-accuracy, pervasiveness, and easy-deployment. Nevertheless, it is not a trivial task to satisfy all three criteria simultaneously. This document scrutinizes the key issues, basic models, and current methods for WiFi indoor localization with the objective of highlighting the underlying principles and challenges. Finally, this manuscript pinpoints the prospective research paths for WiFi indoor localization.
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