Frequency source synchronization and redundancy

Details Frequency source synchronization and redundancy Frequency source synchronization and redundancy

2007-07-26

2010-11-23

Nguyen, Lee (Department: 2618)

Telecommunications

Transmitter and receiver at same station

With frequency stabilization

C455S260000, C331S002000, C331S049000

Reexamination Certificate

active

07840190

ABSTRACT:
A system and method for ensuring proper synchronization of a plurality of frequency sources used in reception diversity-based radio reception. The frequency sources are concatenated in a synchronization loop, through which one frequency source having a high performance oscillator is configured as a master source. Through its oscillator, the master provides an internal synchronization signal that synchronizes all other sources, which have lower performance oscillators and are configured as slaves. Upon a failure in the master oscillator or in the synchronization loop, a slave source takes over as an alternative master source and provides its internal oscillator signal as an alternative synchronization signal to all other frequency sources.

REFERENCES:
patent: 5870441 (1999-02-01), Cotton et al.
patent: 2005/0104666 (2005-05-01), Rebel
patent: 2005/0123085 (2005-06-01), Skog et al.

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