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Internet of Things (IoT) is coming into birth as pervasive hand-held devices, Radio Frequency IDentification (RFID), and embedded sensors connect to the Internet. IoT enables objects to interact and cooperate with each other anytime and anywhere. Owing to the new challenges imposed by IoT — search locality and real-time, searching in IoT is challenging. To explore what way is appropriate to satisfy...
This paper presents a passive UWB-RFID system with Time-Difference-of-Arrival (TDOA) positioning from system to circuit perspectives. Wireless powered RFID tags with UWB transmitter transmit wideband pulses to readers, allowing high accurate Time-of-Arrival (TOA) estimation. Low power low complexity TOA estimations using energy detection receiver are investigated. Max Energy Select (MES), Threshold...
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