In this paper, we study issues associated with the implementation of a real-time WiFi localization system for an indoor environment. This system utilizes smart antennas to receive signal strength from a mobile target (access point) and send the signal strength information to a data processing station. This information is combined to find the direction of arrival of the signal and triangulate the mobile target position. No prior radio-frequency finger-printing is required, thus reducing the computational complexity. We present experimental results to illustrate the performance and accuracy of the localization system for an indoor environment set-up1.
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Lim et al. (2007) studied this question.
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