Adaptive Drift Compensation of Holdover Oscillators

Mobile broadband and telecommunications networks rely on highly stable and accurate timing sources called Stratum clocks to meet the tight phase and synchronization requirements. In a typical network deployment there is one primary reference clock source (PRS) traceable to a Stratum-1 or a cesium atomic clock. A typical network node timing clock source: Stratum-3 or -3E is derived from a more accurate upstream Stratum-2 clock. The clock at each Stratum level must meet standards-specified frequency stability and long-term aging over 20 years.

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