RF-localize: An RFID-based localization algorithm for Internet-of-Things

In this paper an RFID-based localization algorithm for Internet of Things (IoT) is proposed. The responses of RFID tags to different readers are employed to determine the location of the IoT devices. The proposed algorithm does not rely on the on the unreliable power level reading and the sophisticated direction-of-arrival-based methods. First, we assume that the location of the RFID readers are known a priori. Later, in this paper, we extend our results to the scenario where neither the location of IoT devices nor the RFID readers are known. In addition, we provide analytical bounds on the number of readers in the network to have a reliable localization results. The results of the numerical experiment show a highly accurate localization of IoT devices when our proposed RF-Localize algorithm is employed.