Fast communication: Blind carrier frequency offset estimation in OFDM systems with I/Q imbalance

  • Authors:
  • Tao Liu;Hanzhang Li

  • Affiliations:
  • Department of Communication Engineering, School of Information Engineering, University of Science and Technology Beijing, Beijing 100083, China;China Mobile Group Shandong Co., Ltd., Jinan 250100, China

  • Venue:
  • Signal Processing
  • Year:
  • 2009

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Abstract

In this paper, estimation of carrier frequency offset (CFO) in orthogonal frequency division multiplexing (OFDM) systems with I/Q imbalance is studied. By exploiting the mirror spectrum induced by I/Q imbalance, we proposed a novel algorithm for blind CFO estimation without training sequences. Simulation results show that the proposed algorithm outperforms the existing one, which is well accepted as a guideline of blind CFO estimation algorithms in OFDM systems.