Title :
A frequency model of OCXO for holdover mode of DP-PLL
Author :
Hwang, J.K. ; Shin, D.H. ; Han, W. ; Kim, Y.K.
Author_Institution :
Hankyong Nat. Univ., Kyonggi, South Korea
Abstract :
A frequency model of an OCXO (ovened controlled crystal oscillator) is suggested to implement a holdover algorithm in a DP-PLL (digital processing-phase locked loop) system. This model is presented simply with second order polynomials with respect to temperature and aging of the OCXO. The model parameters are obtained from experimental data by applying the LSM (least squares method). The holdover algorithm is simulated with the identified model using another experimental data
Keywords :
ageing; crystal oscillators; digital phase locked loops; frequency response; least squares approximations; DP-PLL; OCXO; digital processing-phase locked loop system; frequency model; holdover algorithm; holdover mode; least-squares method; ovened controlled crystal oscillator; second-order polynomials; Frequency;
Conference_Titel :
SICE 2000. Proceedings of the 39th SICE Annual Conference. International Session Papers
Conference_Location :
Iizuka
Print_ISBN :
0-7803-9805-X
DOI :
10.1109/SICE.2000.889649
