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OFDM Time and Frequency Synchronization by Spread Spectrum Pilot Technique

Författare:
Publiceringsår: 1999
Språk: Engelska
Sidor: 115-119
Publikation/Tidskrift/Serie: Proc. 8th IEEE Communication Theory Mini Conference in conjunction to ICC'99, Vancouver, Canada, June 7-10, 1999
Dokumenttyp: Konferensbidrag
Förlag: IEEE

Sammanfattning

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

Disputation

Nyckelord

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

Övrigt

Communication Theory Mini-Conference, 1999
1999-06-06/1999-06-10
Vancouver, BC, Canada
Published
Yes
  • ISBN: 0-7803-5653-5

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