An improved and fast approach to parameter estimation of SFM signal using Carson's rule

  • Authors:
  • Xuejun Sun;Bin Tang

  • Affiliations:
  • School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China;School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China

  • Venue:
  • WSEAS Transactions on Signal Processing
  • Year:
  • 2009

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Abstract

Fast parameter estimation of sinusoidal frequency modulation signal (SFM) in additive white Gaussian noise is considered. A technique based on Carson's rule is developed to estimate the frequency modulation index; the carrier frequency is calculated using the symmetrical property of side-frequency components; the instantaneous frequency is computed to get the modulation frequency. The Cramér-Rao lower bound (CRLB) of parameter estimation of SFM is also been derived. Monte Carlo simulations show that the parameter estimation accuracy is acceptable when the SNR is above 6dB.