A closed-form blind CFO estimator based on frequency analysis for OFDM systems

@article{Wu2009ACB,
  title={A closed-form blind CFO estimator based on frequency analysis for OFDM systems},
  author={Lu Wu and Xianda Zhang and Pei-Sheng Li and Yongtao Su},
  journal={IEEE Transactions on Communications},
  year={2009},
  volume={57}
}
This letter proposes a blind carrier frequency offset (CFO) estimator for orthogonal frequency-division multiplexing (OFDM) systems based on the frequency analysis of the received signal, and derives a closed-form CFO estimate. Since only one OFDM symbol is utilized instead of multi-symbol averaging, the proposed method is effective even when the CFO is time varying. Finally, analysis and simulation results indicate the outstanding performance of the proposed estimator.