System and circuit for estimating the carrier frequency of a PSK numeric signal
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United States of America Patent
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Jul 30, 1996
Grant Date -
N/A
app pub date -
Oct 1, 1993
filing date -
Oct 9, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention concerns a system for estimating the carrier frequency of a PSK numeric signal, in which symbols are transmitted at frequency fs. The invention is characterized by the use of an estimate, at each symbol interval, of the angular difference between two successive data. Such estimate, suitably processed, provides the control signal for a circuit that compensates the frequency error between the carrier of the received signal and the local oscillator. In a not limiting embodiment, the invention can be implemented through digital circuitry.
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