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A capture-aware access control method for enhanced RFID anti-collision performance

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2 Author(s)
Woo Jin Shin ; Department of Electrical Engineering, Kyung Hee University, Yongin, Republic of Korea. J. G. Kim is the corresponding author (e-mail: {wjshin, jg kim} ; Jeong Geun Kim

This letter presents a novel anti-collision algorithm for radio frequency identification (RFID) systems that drastically improve throughput performance via an intelligent access control for capture inducement. In order to induce the capture, our protocol attempts to divide tags into multiple groups depending on received signal strength, and allow only a selected pair of groups to join the contention process, in which the outcome of contention is more likely to lead to capture due to a significant difference in their signal strengths. Numerical results show that our proposed algorithm significantly outperforms the existing approaches in terms of throughput.

Published in:

IEEE Communications Letters  (Volume:13 ,  Issue: 5 )