Dynamic framed slotted ALOHA algorithm for RFID systems with enhanced tag estimation technique

RFID system tags collision occurs when multiple tags are energized by the RFID tag reader simultaneously. Therefore, it is important for RFID readers to make use of the anti-collision algorithms to enable a single reader to read multiple tags in the reader´s field. Here, we report on the comparison of different ALOHA anti-collision algorithms, and propose an enhanced tag estimation technique for dynamic framed slotted ALOHA algorithm. Simulation results show that the proposed technique is able to maintain the throughput of 0.36 as the frame size changes dynamically up to 1024 tag population.