Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Carrier Frequency Offset Estimation Using ESPRIT for the Interleaved OFDMA Uplink Systems

  • Lee, Jung-Hoon (Center for Information Technology of Yonsei University (CITY), Information and Telecommunication Lab. Dept. of Electrical and Electronic Eng., Yonsei Univ.) ;
  • Lee, Sung-Eun (Center for Information Technology of Yonsei University (CITY), Information and Telecommunication Lab. Dept. of Electrical and Electronic Eng., Yonsei Univ.) ;
  • Hong, Dae-Sik (Center for Information Technology of Yonsei University (CITY), Information and Telecommunication Lab. Dept. of Electrical and Electronic Eng., Yonsei Univ.)
  • Published : 2005.11.26
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Abstract

In this paper, a carrier frequency offset (CFO) estimator is proposed for the interleaved OFDMA uplink systems. It is based on the estimation of signal parameters via rotational invariance technique (ESPRIT). Compared with the Cao's estimator, the proposed estimator has low computational complexity. Simulation results demonstrate that the proposed estimator performs better than Cao's estimator at the relatively low SNR region. Hence, the proposed estimator is more applicable to the practical environments than the Cao’s estimator.

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