Stochastic Modeling of Short and Long Term Clock Skew
Andrich C, Engelhardt M, Ihlow A, Beuster N, Del Galdo G (2020)
Publication Type: Conference contribution
Publication year: 2020
Publisher: Institute of Electrical and Electronics Engineers Inc.
Conference Proceedings Title: IFCS-ISAF 2020 - Joint Conference of the IEEE International Frequency Control Symposium and IEEE International Symposium on Applications of Ferroelectrics, Proceedings
Event location: Virtual, Keystone, CO, USA
ISBN: 9781728164304
DOI: 10.1109/IFCS-ISAF41089.2020.9234818
Abstract
Traditional black box clock skew models are either the power-law noise model or a more recent approach based on auto-regressive (AR) filters. Unfortunately, neither algorithm can accurately model short and long term skew due to limited degrees of freedom or stability constraints. We propose a novel model that employs the current AR algorithm recursively with appropriate pre- and post-processing to achieve numeric stability and accurate reproduction of short and long term effects. The model coefficients are derived from a measured skew signal, with the model output matching an exemplary original signal closely in terms of Allan variance and time-domain behavior.
Involved external institutions
Technische Universität Ilmenau
Germany (DE)
Fraunhofer-Institut für Integrierte Schaltungen (IIS)
Germany (DE)
Germany (DE)
Fraunhofer-Institut für Integrierte Schaltungen (IIS)
Germany (DE)
How to cite
APA:
Andrich, C., Engelhardt, M., Ihlow, A., Beuster, N., & Del Galdo, G. (2020). Stochastic Modeling of Short and Long Term Clock Skew. In IFCS-ISAF 2020 - Joint Conference of the IEEE International Frequency Control Symposium and IEEE International Symposium on Applications of Ferroelectrics, Proceedings. Virtual, Keystone, CO, USA: Institute of Electrical and Electronics Engineers Inc..
MLA:
Andrich, Carsten, et al. "Stochastic Modeling of Short and Long Term Clock Skew." Proceedings of the 2020 Joint Conference of the IEEE International Frequency Control Symposium and IEEE International Symposium on Applications of Ferroelectrics, IFCS-ISAF 2020, Virtual, Keystone, CO, USA Institute of Electrical and Electronics Engineers Inc., 2020.
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