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Timing and frequency synchronization for OFDM based cooperative systems

  • National University of Defense Technology China
  • University of Leeds

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Résumé

In this paper, we investigate the timing and carrier frequency offset (CFO) synchronization problem in decode and forward cooperative systems operating over frequency selective channels. A training sequence which consists of one OFDM block having a tile structure in the frequency domain is proposed to perform synchronization. Timing offsets are estimated using correlation-type algorithms. And since some subcarriers are nulled in the proposed tile structure, CFOs are readily estimated using subspace-based methods. By judiciously designing the size of the tile, these algorithms are shown to have better performance, in terms of synchronization errors and bit error rate, than the computationally demanding SAGE algorithm.

langue originaleAnglais
titre2009 IEEE International Conference on Acoustics, Speech, and Signal Processing - Proceedings, ICASSP 2009
Pages2649-2652
Nombre de pages4
Les DOIs
étatPublié - 23 sept. 2009
Evénement2009 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2009 - Taipei, Taiwan
Durée: 19 avr. 200924 avr. 2009

Série de publications

NomICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (imprimé)1520-6149

Une conférence

Une conférence2009 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2009
Pays/TerritoireTaiwan
La villeTaipei
période19/04/0924/04/09

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