Blind carrier frequency offset estimation in SISO, MIMO, and multiuser OFDM systems

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Abstract

Relying on a kurtosis-type criterion, we develop a low-complexity blind carrier frequency offset (CFO) estimator for orthogonal frequency-division multiplexing (OFDM) systems. We demonstrate analytically how identifiability and performance of this blind CFO estimator depend on the channel's frequency selectivity and the input distribution. We show that this approach can be applied to blind CFO estimation in multi-input multi-output and multiuser OFDM systems. The issues of channel nulls, multiuser interference, and effects of multiple antennas are addressed analytically, and tested via simulations.

Original languageEnglish (US)
Pages (from-to)173-183
Number of pages11
JournalIEEE Transactions on Communications
Volume53
Issue number1
DOIs
StatePublished - Jan 1 2005

Keywords

  • Carrier frequency offset (CFO)
  • Kurtosis
  • Multi-input multi-output orthogonal frequency-division multiplexing (MIMO-OFDM)
  • Multiuser OFDM
  • Orthogonal frequency-division multiplexing (OFDM)

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