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Joint 2D-pilot-symbol-assisted-modulation and decision-directed frequency synchronization schemes for coherent OFDM

  • Maria Julia Fernández-Getino Garcia
  • Ove Edfors
  • José M. Páez-Borrallo
Publiceringsår: 2000
Språk: Engelska
Sidor: 2961-2964
Publikation/Tidskrift/Serie: Proc. IEEE Acoustics, Speech, and Signal Processing Conference
Volym: 5
Dokumenttyp: Konferensbidrag
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.


A new frequency offset tracking approach for OFDM has been addressed. Two-dimensional pilot-symbol assisted modulation (2D-PSAM) is employed in coherent OFDM for channel estimation and it is based on inserting known symbols spread out through the 2D time-frequency grid. We show that these scattered symbols can also be employed to perform frequency synchronization. Maximum likelihood estimation has been derived for both time and frequency domains. Also, if a decision-guided strategy is used jointly with the 2D-PSAM signalling, an improvement in performance can be attained


  • Electrical Engineering, Electronic Engineering, Information Engineering


IEEE Acoustics, Speech, and Signal Processing Conference
  • Radio Systems-lup-obsolete
  • ISBN: 0-7803-6293-4

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