Title :
An estimator-predictor approach to PLL loop filter design
Author :
Statman, Joseph I. ; Hurd, William J.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fDate :
10/1/1990 12:00:00 AM
Abstract :
The design of digital phase locked loops (DPLL) using estimation theory concepts in the selection of a loop filter is presented. The key concept, that the DPLL closed-loop transfer function is decomposed into an estimator and a predictor, is discussed. The estimator provides recursive estimates of phase, frequency, and higher-order derivatives, and the predictor compensates for the transport lag inherent in the loop
Keywords :
closed loop systems; digital circuits; digital filters; estimation theory; filtering and prediction theory; phase-locked loops; PLL loop filter design; closed-loop transfer function; digital phase locked loops; estimation theory concepts; Delay; Estimation theory; Filters; Frequency estimation; Phase estimation; Phase locked loops; Recursive estimation; State estimation; Transfer functions; Voltage-controlled oscillators;
Journal_Title :
Communications, IEEE Transactions on
