Improved Dynamic Frame Slotted ALOHA Algorithm for Anti-collision in RFID Systems

摘要

The collision caused by tags is one of the most important problems which affect the efficiency of the RFID system. This paper presents the classical ALOHA algorithm in detail and estimates the real-time number of tags according to the collision so as to adjust the frame size of dynamically. Then a new algorithm based on estimating of the tag number is proposed. Analysis and simulation both show that the presented IDFSA algorithm is very effective compared to the conventional algorithms.