Method and device for estimating the carrier frequency of a modulated data signal
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United States of America Patent
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Mar 29, 1994
Grant Date -
N/A
app pub date -
Dec 19, 1991
filing date -
Dec 19, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of estimating the carrier frequency of a numeric signal, in which two estimates of the carrier phase are carried out in successive instants of time and the estimated carrier frequency is obtained from the comparison of the above two estimates. The invention also concerns a device for implementing the method, the device including a circuit for estimating the phase of the signal at successive instants in time, a circuit for storing the estimates, and a circuit for comparing the estimates. In a preferred embodiment, both the phase estimator and the comparison circuit are implemented by multipliers and adders.
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