Application of ICA-based anti-collision algorithm in RFID system

  • Authors:

  • Lifen Yuan;Yigang He

  • Affiliations:

  • College of Electrical and Information Engineering, Hunan University, Changsha, China 410082 and College of Physics and Information Science, Hunan Normal University, Changsha, China 410082;College of Electrical and Information Engineering, Hunan University, Changsha, China 410082

  • Venue:
  • Analog Integrated Circuits and Signal Processing
  • Year:
  • 2010

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Abstract

Data collision problem exists in radio frequency identification (RFID) system when tabs are present in the interrogation zone of a single reader at the same time. Though different anti-collision methods have been proposed, it still needs further study on how to improve the identification ability especially in the interference circumstance. This paper presents a new method based on independent component analysis (ICA) algorithm. Coded division multiple access (CDMA) technology is adopted at the transmitter and the maximum signal to noise ratio is applied at the receiver of the RFID system. The proposed method has been verified by computer simulation which shows that the system can separate different users' source data correctly based on ICA algorithm and has better performance compared with the traditional CDMA technology.