Performance analysis of basic tree protocols and ALOHA-based anti-collision algorithms used in RFID systems

Radio Frequency Identification (RFID) is a popular automatic identification and an emerging wireless technology with highly promising applications. In an RFID system, the anti-collision algorithm is one of the primary mechanisms to address the issue of multi-object identification. This paper focused on a detailed study of the ALOHA anti-collision problem and a comparative study with the basic binary tree protocols. Two tag estimation methods were investigated and a performance analysis was successfully achieved based on various key design parameters such as the probability of a successful transmission, the collision ratio, the offered load, the system efficiency, the system throughput and the estimation accuracy of successful transmission.