An Indoor Localization Algorithm for Lighting Control using RFID

Occupant´s identity and location are important information for lighting control in order to reduce the energy consumption while increasing livelihood. While active RFID system provides occupant´s identity, it is nontrivial to localize the occupant´s location in an indoor environment due to the multipath effect, the changing environment, and the unreliable communication link. In this paper, we implement a system with multiple active RFID readers, and develop a localization algorithm based on support vector machine (SVM). The algorithm uses round-robin comparison to localize the occupant to one of the multiple regions in a floor. The geometric relationship among the rooms and the historical localization data are used to further improve the localization accuracy. Numerical results demonstrate a high localization accuracy of this algorithm. We hope this work sheds insight on lighting control for energy saving and an increased livelihood.