A Novel Adaptive Digital Pre-distortion Method in the UHF RFID System

  • Dan-Feng Li
  • Chun Zhang
  • Ziqiang Wang
  • Jing-Chao Wang
  • Xu-Guang Sun
Conference paper
Part of the Advances in Intelligent and Soft Computing book series (AINSC, volume 158)

Abstract

The linearity of the radio frequency identification (RFID) system has a great effect on its performance and power dissipation. A novel adaptive digital pre-distortion (ADPD) method based on Look Up Table (LUT) is proposed in this paper, which can effectively improve the linearity of the RFID system. With the help of the ADPD method, the harmonic component is eliminated about 40 dB, and the three-order inter-modulation distortion (IMD3) is eliminated about 47 dB. By using the interpolation module, the size of the LUT is reduced to 3% of the full size. The rate of the ADPD method’s convergence is speeded up by 55%, owing to the acceleration module.

Keywords

RFID inter-modulation distortion ADPD LUT 

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Copyright information

© Springer-Verlag GmbH Berlin Heidelberg 2012

Authors and Affiliations

  • Dan-Feng Li
    • 1
  • Chun Zhang
    • 1
  • Ziqiang Wang
    • 1
  • Jing-Chao Wang
    • 1
  • Xu-Guang Sun
    • 1
  1. 1.Institute of MicroelectronicsTsinghua UniversityBeijingChina

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