Oscillators – Automatic frequency stabilization using a phase or frequency... – With reference oscillator or source
Reexamination Certificate
2008-10-29
2010-11-02
Pascal, Robert (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
With reference oscillator or source
C331S179000, C455S260000, C375S376000
Reexamination Certificate
active
07825740
ABSTRACT:
In at least some embodiments, a communication system includes a receiver having a local oscillator (LO) for each of a plurality of frequency bands. Each LO is controlled by a separate phase-locked loop (PLL) that tracks carrier frequency offset (CFO) using a common phase error (CPE). The CPE is selectively weighted based on at least one inter-band frequency correlation (IFC) coefficient.
REFERENCES:
patent: 2006/0234656 (2006-10-01), Matsui et al.
patent: 2007/0053462 (2007-03-01), Pirooz et al.
patent: 2007/0085623 (2007-04-01), Staszewski et al.
patent: 2008/0291974 (2008-11-01), Collados et al.
Azenkot Yehuda
Singh Manoneet
Wilhoyte Michael E.
Brady W. James
Goodley James E
Pascal Robert
Shaw Steven A.
Telecky , Jr. Frederick J.
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