Reflective interference in passive RFID localization and the improvement method

Authors:
Mao xu-rui;Liu qing-gang;Mao lu-hong
Affiliations:
State key Lab of Precision Measuring Technology & Instrument, Tianjin University, Tianjin, China;State key Lab of Precision Measuring Technology & Instrument, Tianjin University, Tianjin, China;School of Electronic Information Engineering, Tianjin University, Tianjin, China
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

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Abstract

This paper analysis the reflective interference in RSSI localization of passive RFID and the level of the interference is presented in theory. Drawbacks of the method of signal received by reader in passive RFID RSSI localization are pointed out. In order to reduce the reflective interference, a new passive RFID localization method based on signal received by transponder is proposed and the corresponding transponder is designed. The new method can overcome the drawbacks in current passive RFID localization and improve the accuracy by reduce the effect of the interference. And it is easy to implement.