### Abstract

In this paper, a fast and low-complex frequency synchronization method with wide acquisition range of frequency offset is proposed for orthogonal frequency division multiplexing (OFDM) systems. The training sequence is composed of two OFDM symbols, one for fine estimate and the other for coarse estimate of the frequency offset. The symbol for coarse estimate is designed in such a way that the argument of the correlation of each subcarrier with adjacent one and the predetermined difference component is proportional to the frequency offset. The coarse estimator requires only one correlation operation in the frequency domain, hence its computational complexity is similar to the conventional time domain methods. The maximum acquisition range of the frequency is M times the subcarrier spacing when M-ary phase shift keying (M-PSK) modulation is used for the subcarriers. Simulation results show that the error rate of the coarse estimate is very low and the proposed scheme reveals performance approaching the Cramer-Rao lower bound at reasonable signal-to-noise ratio (SNR) level.

Original language | English |
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Title of host publication | IEEE Vehicular Technology Conference |

Pages | 1120-1124 |

Number of pages | 5 |

Volume | 2 |

Edition | 54ND |

Publication status | Published - 2001 |

Event | IEEE 54th Vehicular Technology Conference (VTC FALL 2001) - Atlantic City, NJ, United States Duration: 2001 Oct 7 → 2001 Oct 11 |

### Other

Other | IEEE 54th Vehicular Technology Conference (VTC FALL 2001) |
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Country | United States |

City | Atlantic City, NJ |

Period | 01/10/7 → 01/10/11 |

### Fingerprint

### ASJC Scopus subject areas

- Electrical and Electronic Engineering

### Cite this

*IEEE Vehicular Technology Conference*(54ND ed., Vol. 2, pp. 1120-1124)

**Fast and low-complex frequency synchronization for OFDM.** / Seo, B. S.; Kim, S. C.; Park, Jinwoo; Ihm, J. T.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*IEEE Vehicular Technology Conference.*54ND edn, vol. 2, pp. 1120-1124, IEEE 54th Vehicular Technology Conference (VTC FALL 2001), Atlantic City, NJ, United States, 01/10/7.

}

TY - GEN

T1 - Fast and low-complex frequency synchronization for OFDM

AU - Seo, B. S.

AU - Kim, S. C.

AU - Park, Jinwoo

AU - Ihm, J. T.

PY - 2001

Y1 - 2001

N2 - In this paper, a fast and low-complex frequency synchronization method with wide acquisition range of frequency offset is proposed for orthogonal frequency division multiplexing (OFDM) systems. The training sequence is composed of two OFDM symbols, one for fine estimate and the other for coarse estimate of the frequency offset. The symbol for coarse estimate is designed in such a way that the argument of the correlation of each subcarrier with adjacent one and the predetermined difference component is proportional to the frequency offset. The coarse estimator requires only one correlation operation in the frequency domain, hence its computational complexity is similar to the conventional time domain methods. The maximum acquisition range of the frequency is M times the subcarrier spacing when M-ary phase shift keying (M-PSK) modulation is used for the subcarriers. Simulation results show that the error rate of the coarse estimate is very low and the proposed scheme reveals performance approaching the Cramer-Rao lower bound at reasonable signal-to-noise ratio (SNR) level.

AB - In this paper, a fast and low-complex frequency synchronization method with wide acquisition range of frequency offset is proposed for orthogonal frequency division multiplexing (OFDM) systems. The training sequence is composed of two OFDM symbols, one for fine estimate and the other for coarse estimate of the frequency offset. The symbol for coarse estimate is designed in such a way that the argument of the correlation of each subcarrier with adjacent one and the predetermined difference component is proportional to the frequency offset. The coarse estimator requires only one correlation operation in the frequency domain, hence its computational complexity is similar to the conventional time domain methods. The maximum acquisition range of the frequency is M times the subcarrier spacing when M-ary phase shift keying (M-PSK) modulation is used for the subcarriers. Simulation results show that the error rate of the coarse estimate is very low and the proposed scheme reveals performance approaching the Cramer-Rao lower bound at reasonable signal-to-noise ratio (SNR) level.

UR - http://www.scopus.com/inward/record.url?scp=0035177245&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035177245&partnerID=8YFLogxK

M3 - Conference contribution

VL - 2

SP - 1120

EP - 1124

BT - IEEE Vehicular Technology Conference

ER -