OFDM Time and Frequency Synchronization by Spread Spectrum Pilot Technique

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding


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


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Electrical Engineering, Electronic Engineering, Information Engineering


  • synchronisation, timing, pseudonoise codes, probability, error analysis, spread spectrum communication, sequences, frequency estimation, OFDM modulation
Original languageEnglish
Title of host publicationProc. 8th IEEE Communication Theory Mini Conference in conjunction to ICC'99, Vancouver, Canada, June 7-10, 1999
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)0-7803-5653-5
Publication statusPublished - 1999
Publication categoryResearch
EventCommunication Theory Mini-Conference, 1999 - Vancouver, BC, Canada
Duration: 1999 Jun 61999 Jun 10


ConferenceCommunication Theory Mini-Conference, 1999
CityVancouver, BC

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