On the Optimality of the Null Subcarrier Placement for Blind Carrier Offset Estimation in OFDM Systems

@article{Wu2009OnTO,
  title={On the Optimality of the Null Subcarrier Placement for Blind Carrier Offset Estimation in OFDM Systems},
  author={Yan Wu and Samir Attallah and Jan W. M. Bergmans},
  journal={IEEE Transactions on Vehicular Technology},
  year={2009},
  volume={58},
  pages={2109-2115}
}
Liu and Tureli proposed a blind carrier frequency offset (CFO) estimation method for orthogonal frequency-division multiplexing (OFDM) systems, making use of null subcarriers. The optimal subcarrier placement that minimizes the Cramer-Rao bound (CRB) of the CFO estimation was reported by Ghogho. In this paper, we study the optimality of the null subcarrier placement from another perspective. We first show that the SNR of the CFO estimation using null subcarriers is a function of the null… CONTINUE READING

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