Fine resolution frequency estimation from three DFT samples: Case of windowed data


Candan C.

SIGNAL PROCESSING, vol.114, pp.245-250, 2015 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 114
  • Publication Date: 2015
  • Doi Number: 10.1016/j.sigpro.2015.03.009
  • Title of Journal : SIGNAL PROCESSING
  • Page Numbers: pp.245-250
  • Keywords: Frequency estimation, Interpolated DFT, IpDFT, Rife-Vincent windows, Side-lobe suppression, INTERFERENCE REJECTION CAPABILITY, INTERPOLATED DFT, FOURIER COEFFICIENTS, ALGORITHMS, SIGNAL

Abstract

An efficient and low complexity frequency estimation method based on the discrete Fourier transform (DFT) samples is described. The suggested method can operate with an arbitrary window function in the absence or presence of zero-padding. The frequency estimation performance of the suggested method is shown to follow the Cramer-Rao bound closely without any error floor due to estimator bias, even at exceptionally high signal-to-noise-ratio (SNR) values. (C) 2015 Elsevier B.V. All rights reserved.