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ML estimation of time and frequency offset in OFDM systems

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Author

Summary, in English

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.

Publishing year

1997

Language

English

Pages

1800-1805

Publication/Series

IEEE Transactions on Signal Processing

Volume

45

Issue

7

Document type

Journal article

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • 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

Status

Published

Research group

  • Broadband Communication

ISBN/ISSN/Other

  • ISSN: 1053-587X