A Low Complexity and Robust Frequency Offset Estimation Algorithm for OFDM-Based WLAN Systems

  • Sanghun Kim
  • Seokho Yoon
  • Hyoung-Kee Choi
  • Sun Yong Kim
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3992)


This paper addresses the frequency offset estimation problem in the presence of the timing error for OFDM-based WLAN systems. When the timing error exists, the correlation value used for the frequency offset estimation could be reduced significantly due to the timing error, resulting in considerable degradation in estimation performance. In this paper, using the coherence phase bandwidth (CPB) and a threshold, a novel frequency offset estimation algorithm is proposed and based on which, an efficient timing error estimation algorithm is also proposed for the re-estimation of the frequency offset.


Estimation Algorithm Orthogonal Frequency Division Multiplex Additive White Gaussian Noise Timing Error Orthogonal Frequency Division Multiplex System 
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  1. 1.
    Prasad, N., Prasad, A.: WLAN Systems and Wireless IP for Next Generation Communications. Artech House, Boston (2002)Google Scholar
  2. 2.
    Pollet, T., Peeters, M.: Synchronization with DMT modulation. IEEE Commun. Mag. 37, 80–86 (1999)CrossRefGoogle Scholar
  3. 3.
    Nee, R.V., Prasad, R.: OFDM for Wireless Multimedia Communications. Artech House, England (2000)Google Scholar
  4. 4.
    Nogami, H., Nagashima, T.: A frequency and timing period acquisition technique for OFDM systems. In: Proc.IEEE PIRMC, Toronto, Canada, September 1995, pp. 1010–1015 (1995)Google Scholar
  5. 5.
    Prasetyo, B.Y., Said, F., Aghvami, A.H.: Fast burst synchronisation technique for OFDM-WLAN systems. IEE Proceedings: Commun. 147, 292–298 (2000)CrossRefGoogle Scholar
  6. 6.
    Li, J., Liu, G., Giannakis, G.B.: Carrier frequency offset estimation for OFDM-based WLANs. IEEE Signal Process. Lett. 8, 80–82 (2001)CrossRefGoogle Scholar
  7. 7.
    Fazel, K., Kaiser, S.: Multi-Carrier and Spread Spectrum Systems. John Wiley and Sons, England (2003)CrossRefGoogle Scholar
  8. 8.
    Bang, K., Cho, N., Jun, H., Kim, K., Park, H., Hong, D.: A coarse frequency offset estimation in an OFDM system using the concept of the coherence phase bandwidth. IEEE Trans. Commun. 49, 1320–1324 (2001)MATHCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Sanghun Kim
    • 1
  • Seokho Yoon
    • 1
  • Hyoung-Kee Choi
    • 1
  • Sun Yong Kim
    • 2
  1. 1.School of Information and Communication EngineeringSungkyunkwan UniversitySuwon, Kyunggi-doKorea
  2. 2.Department of Electronics EngineeringKonkuk UniversitySeoulKorea

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