Fast acquisition of timing and carrier frequency from received signal
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United States of America Patent
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Dec 19, 2006
Grant Date -
Jul 22, 2004
app pub date -
Oct 24, 2003
filing date -
Apr 27, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for determining the symbol timing and carrier frequency of a digitized input signal is disclosed. In one embodiment, the method comprises the steps of computing a temporally varying magnitude of the input signal, determining a frequency domain representation of the computed magnitude of the input signal, identifying a spectral component at a symbol frequency f.sub.s away from a DC component of the frequency domain representation of the computed magnitude of the input signal, the spectral component having a magnitude and a phase, and determining the symbol timing phase of the input signal from the phase of the spectral component.
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