HP Labs Technical Reports

Joint Time and Frequency Offset Estimation for Clock Synchronization

Ferrandiz, Josep M.

HPL-95-76

Keyword(s):

Abstract: Timing data gathered from network traffic is fed into a Kalman filter designed to jointly estimate the clock offset and the clock frequency offset with respect to the time server. The method proposed builds a statistical framework for synchronization of computer clocks that allows a probabilistic interpretation of the quantities involved. The tests show that the filter performance is for all practical purposes optimal.

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