Oscillator Model for High-Precision Synchronization Protocol Discrete Event Simulation; Conference paper

摘要

It is well known that a common notion of time in distributed systems can be used to ensure additional properties such as real-time behavior or the identification of the order of events. As large-scale hardware testbeds for such systems are neither efficient nor easy to manage, discrete event simulations (DES) can be used to model such networks. However, to ensure an exact behavior of such simulations, high precise models of the local clocks are also needed: the driving oscillators have to be modeled in a way that a DES simulation of a free-running node clock shows the same Allan deviation as the simulated counterpart. This paper shows an approach to find a corresponding model for a simulator using white noise and a filter with the same power density spectrum as real-world oscillators.