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OFDM Time and Frequency Synchronization by Spread Spectrum Pilot Technique

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Author

Summary, in English

Correct time and frequency synchronization is important for the performance of orthogonal frequency division multiplex (OFDM) systems. We evaluate a system where a pseudonoise sequence (PN-sequence) is used for estimation of these synchronization parameters. The PN-sequence is superimposed on the OFDM signal. The system is evaluated by means of the variance of the frequency estimation error and the probability for correct timing synchronization. Both theoretical and simulated results are presented. The proposed technique is very flexible and works also at low signal to noise ratios. The frequency offset range has been significantly increased compared to conventional OFDM synchronizer schemes

Publishing year

1999

Language

English

Pages

115-119

Publication/Series

Proc. 8th IEEE Communication Theory Mini Conference in conjunction to ICC'99, Vancouver, Canada, June 7-10, 1999

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • synchronisation
  • timing
  • pseudonoise codes
  • probability
  • error analysis
  • spread spectrum communication
  • sequences
  • frequency estimation
  • OFDM modulation

Conference name

Communication Theory Mini-Conference, 1999

Conference date

1999-06-06 - 1999-06-10

Conference place

Vancouver, BC, Canada

Status

Published

ISBN/ISSN/Other

  • ISBN: 0-7803-5653-5