An Improved and Fast Approach to Parameter Estimation of SFM Signal Using Carson's Rule
نویسندگان
چکیده
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. Key-Words: Sinusoidal FM; Carson's Rule; Parameter estimation; Instantaneous frequency; CRLB.
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