A New Method of Signal Processing in RFID System

Radio frequency identification (RFID) is a contactless automatic identification system based on radio technology. With the development of communication technology, RFID system bas become very popular in recent years, and how to improve the capability of data identification is urgent. Now there are several data identification algorithm used to deal with signals in the RFID system, the tradition method is adopted aloha algorithm., which will result in the system performance descend quickly when the tabs in the systems increased, even will cause the system blocked. In this paper, Independent component analysis (ICA) based on frequency division multiplex access algorithm is introduced to improve the identification ability. The proposed method has been verified by computer simulation which shows that the method is feasible and has good performance compared with the traditional aloha algorithm, especially when the user numbers increased quickly.