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

Författare:
Publiceringsår: 2000
Språk: Engelska
Sidor: 2961-2964
Publikation/Tidskrift/Serie: Proc. IEEE Acoustics, Speech, and Signal Processing Conference
Volym: 5
Dokumenttyp: Konferensbidrag
Förlag: IEEE

Sammanfattning

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

Disputation

Nyckelord

  • Technology and Engineering

Övriga

IEEE Acoustics, Speech, and Signal Processing Conference
2000-06-05/2000-06-09
Istanbul, Turkey
Published
Yes
  • Radio Systems
  • ISBN: 0-7803-6293-4

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