Title :
Design and implementation of a passive UHF RFID-based Real Time Location System
Author :
Xiong, Ting-Wen ; Liu, Jun-Juan ; Yang, Yu-Qing ; Tan, Xi ; Min, Hao
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China
Abstract :
A passive Ultra-High Frequency (UHF) Radio Frequency Identification (RFID) based Real Time Locating System (RTLS) is presented in the paper. For the validation, a reader has been developed and complemented with a tag modulator to form a complete UHF RFID-based real time locating system focused on backscattering communication. PN sequences have been used to measure the TOA and estimate the distance between reader and tag. A TX-to-RX leakage canceller has been applied in the reader RF front-end to increase the isolation and enhance the sensitivity. Measurement results indicate that the estimation accuracy in real time is about 1.6 meters and the mean estimation error of 1000 times´ measurement in 1 second is less than 0.5 meter.
Keywords :
UHF devices; backscatter; radiofrequency identification; time-of-arrival estimation; transceivers; PN sequences; RTLS; TOA estimation; TX-to-RX leakage canceller; UHF RFID; backscattering communication; real time location system; time-of-arrival estimation; ultra-high frequency radio frequency identification; Active RFID tags; Backscatter; Direction of arrival estimation; Frequency; Passive RFID tags; Radar tracking; Radiofrequency identification; Real time systems; Sensor systems; UHF measurements; Radio Frequency Identification (RFID); Real Time Locating System (RTLS); Time of Arrival (TOA); backscattering;
Conference_Titel :
VLSI Design Automation and Test (VLSI-DAT), 2010 International Symposium on
Conference_Location :
Hsin Chu
Print_ISBN :
978-1-4244-5269-9
Electronic_ISBN :
978-1-4244-5271-2
DOI :
10.1109/VDAT.2010.5496700
