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ML estimation of time and frequency offset in OFDM systems

Publiceringsår: 1997
Språk: Engelska
Sidor: 1800-1805
Publikation/Tidskrift/Serie: IEEE Transactions on Signal Processing
Volym: 45
Nummer: 7
Dokumenttyp: Artikel
Förlag: IEEE


We present the joint maximum likelihood (ML) symbol-time and carrier-frequency offset estimator in orthogonal frequency-division multiplexing (OFDM) systems. Redundant information contained within the cyclic prefix enables this estimation without additional pilots. Simulations show that the frequency estimator may be used in a tracking mode and the time estimator in an acquisition mode.



  • Electrical Engineering, Electronic Engineering, Information Engineering
  • OFDM systems
  • frequency estimation
  • frequency division multiplexing
  • multiplexing
  • maximum likelihood estimation
  • synchronisation
  • carrier-frequency offset estimator
  • acquisition mode
  • cyclic prefix
  • tracking
  • orthogonal frequency-division
  • tracking mode
  • symbol-time estimator
  • maximum likelihood
  • redundant information
  • time offset


  • Broadband Communication
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  • ISSN: 1053-587X

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