A fine-resolution frequency estimator using an arbitrary number of DFT coefficients

ORGUNER U., CANDAN Ç.

SIGNAL PROCESSING, cilt.105, ss.17-21, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 105
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.sigpro.2014.05.013
  • Dergi Adı: SIGNAL PROCESSING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.17-21
  • Anahtar Kelimeler: Frequency estimation, Cramer-Rao bound, FOURIER COEFFICIENTS, SINGLE, INTERPOLATION
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

A method for the frequency estimation of complex exponential signals observed under additive white Gaussian noise is presented. Unlike competing methods based on relatively few Discrete Fourier Transform (DFT) samples, the presented technique can generate a frequency estimate by fusing the information from all DFT samples. The estimator is shown to follow the Cramer-Rao bound with a smaller signal-to-noise ratio (SNR) gap than the competing estimators at high SNR. (c) 2014 Elsevier B.V. All rights reserved.