Fast and low-complex frequency synchronization for OFDM

B. S. Seo, S. C. Kim, Jinwoo Park, J. T. Ihm

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

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 languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
Pages1120-1124
Number of pages5
Volume2
Edition54ND
Publication statusPublished - 2001
EventIEEE 54th Vehicular Technology Conference (VTC FALL 2001) - Atlantic City, NJ, United States
Duration: 2001 Oct 72001 Oct 11

Other

OtherIEEE 54th Vehicular Technology Conference (VTC FALL 2001)
CountryUnited States
CityAtlantic City, NJ
Period01/10/701/10/11

Fingerprint

Orthogonal frequency division multiplexing
Synchronization
Phase shift keying
Computational complexity
Signal to noise ratio
Modulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Seo, B. S., Kim, S. C., Park, J., & Ihm, J. T. (2001). Fast and low-complex frequency synchronization for OFDM. In 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.

IEEE Vehicular Technology Conference. Vol. 2 54ND. ed. 2001. p. 1120-1124.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Seo, BS, Kim, SC, Park, J & Ihm, JT 2001, Fast and low-complex frequency synchronization for OFDM. in 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.
Seo BS, Kim SC, Park J, Ihm JT. Fast and low-complex frequency synchronization for OFDM. In IEEE Vehicular Technology Conference. 54ND ed. Vol. 2. 2001. p. 1120-1124
Seo, B. S. ; Kim, S. C. ; Park, Jinwoo ; Ihm, J. T. / Fast and low-complex frequency synchronization for OFDM. IEEE Vehicular Technology Conference. Vol. 2 54ND. ed. 2001. pp. 1120-1124
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