Pulse or digital communications – Synchronizers – Synchronizing the sampling time of digital data
Reexamination Certificate
2006-11-07
2006-11-07
Corrielus, Jean B. (Department: 2611)
Pulse or digital communications
Synchronizers
Synchronizing the sampling time of digital data
C375S362000, C375S316000, C342S357490, C342S357490, C701S213000
Reexamination Certificate
active
07133480
ABSTRACT:
A method and related apparatus for reproducing a periodic signal received over a communication channel, or signal window of a desired profile, wherein the resolution of the reproduced signal or window is not limited by a digital sampling interval. The profile can be selected to match and compensate for known or estimated characteristics of a communication channel. A frequency difference, due to a Doppler frequency shift or other errors between received signals and locally generated signals, is determined in a receiver and utilized to derive a fine code phase measurement that is then usable to generate a succession of magnitudes that reproduce the desired signal or window profile.
REFERENCES:
patent: 5574756 (1996-11-01), Jeong
patent: 6603362 (2003-08-01), Von Dolteren, Jr.
patent: 2002/0075969 (2002-06-01), Sande et al.
patent: 2002/0084856 (2002-07-01), Von Dolteren, Jr.
Colborne Steven Francis
Keegan Richard Gerald
Corrielus Jean B.
Leica Geosystems Inc.
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