Sliding discrete Fourier transform based frequency-locked loop for adaptive carrier tracking of bi-phase signals

For bi-phase signals, an adaptive carrier tracking method based on sliding discrete Fourier transform (SDFT) frequency-locked loop (FLL) is proposed. Magnitude and phase spectra of closed-loop SDFT filter provide almost flat response around the centre frequency. However, the small magnitude and phas...

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Veröffentlicht in:	IET communications 2016-12, Vol.10 (18), p.2649-2655
Hauptverfasser:	Joshi, Udaya, Parasuraman, Sumathi
Format:	Artikel
Sprache:	eng
Schlagworte:	adaptive carrier tracking method adaptive control adaptive sampling frequency control biphase signals Carrier frequencies carrier frequency estimated Carriers closed‐loop SDFT filter discrete Fourier transforms Doppler effect Doppler shift filtering theory Fourier transforms frequency control frequency error computation frequency locked loops Frequency variation input frequency variation estimation magnitude spectra phase spectra SDFT in‐phase component SDFT quadrature component signal sampling Sliding sliding discrete Fourier transform based frequency‐locked loop Spectra Tracking
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