Research of Multi-access and Anti-collision Protocols in RFID Systems

Due to the limitless possibilities and low cost, radio frequency identification (RFID) systems have emerged as an affordable solution for object identification. They are a cheap and error proof alternative to traditional object identification techniques. Simultaneous transmissions in RFID systems lead to collisions as the readers and tags typically operate on the shared wireless channel. Therefore, collision arbitration for RFID tags and readers is a significant issue for fast identification. The main focus of this paper is to research the collision resolution protocols for multi-access communication and make a comparison of performance for these anti-collision protocols in RFID systems.