Silence Coding for RFID Tag Anti-Collision

This paper proposes a tree-based RFID tag anti-collision protocol, called the silence coding query tree (SCQT) protocol, based on a novel coding scheme, namely the silence coding, to speed up tag identification. The proposed protocol can identify multiple tags at a time even at the appearance of tag signal collisions. Simulation results show that the SCQT protocol significantly outperforms other related tree-based protocols in terms of the number of cycles to identify tags.

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