The impact of reader to tag collision on RFID tag identification

Authors:
Yiyang Zhao;Weijun Hong;S. C. Cheung;Shufang Li
Affiliations:
Department of Computer Science and Engineering, Hong Kong University of Science and Technology, Hong Kong SAR, China;Beijing University of Posts and Telecommunications, Beijing, China;Department of Computer Science and Engineering, Hong Kong University of Science and Technology, Hong Kong SAR, China;Beijing University of Posts and Telecommunications, Beijing, China
Venue:
WASA'10 Proceedings of the 5th international conference on Wireless algorithms, systems, and applications
Year:
2010

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Abstract

RFID has been applied in many areas. Since the dense deployment of readers and tags, the collision problem of RFID system becomes a critical issue. In this paper, we introduce a novel probabilistic model to estimate the impact of reader to tag collision based on the information from physical layer. According to the theoretical analysis, our model ensures that more than one tag can be identified by both readers when they communicate with tags. To obtain the bit information, we employ the NI RFID emulator and LabView software. The simulation results show that the probability of miss-identification is lower than 17%.