基于ALOHA防碰撞算法的研究

Study of anti-collision algorithm based on ALOHA

RFID技术利用射频方式进行非接触双向通信和数据交换,以实现目标的自动识别和远程实时监控及管理.在RFID系统中常出现数据冲突造成的碰撞问题,严重影响系统识别率.本文对高频和超高频中ALOHA防碰撞中各算法进行分析论证.

RFID can be used for objects identification and assets tracing automatically and remotely by contact-less intercommunication and data changing. Along with the thorough application oi the large-scale integrated circuit and the demand of the multiple objects identification. However, the collision problem which often happens in RFID system influences the system performance badly. So the approach to solve the collision problem must be taken to improve the identification efficiency. The paper makes analysis for these algorithms in the range of high frequency and UHF.