Frequency offset correction
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United States of America Patent
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Mar 24, 1998
Grant Date -
N/A
app pub date -
Oct 20, 1995
filing date -
Oct 25, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a method and a device for correcting a frequency offset between a receive signal and a reference signal, the receive signal, being fed to a frequency converter which also receives a conversion signal in order to produce a transposed signal, the conversion signal is produced by a local oscillator in response to a control signal. The device initializes the control signal according to the reference signal. An estimator receives the transposed signal and the control signal and produces repetitively an estimate of the frequency offset comprising the sum of a correction value and an adjustment value respectively greater than and less than a predetermined correction threshold. The control signal is modified in response to the correction value. The transposed signal is connected using at least one of the successive estimates.
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