Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2006-12-19
2006-12-19
Bayard, Emmanuel (Department: 2638)
Pulse or digital communications
Receivers
Angle modulation
Reexamination Certificate
active
07151807
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 ƒsaway 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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Bayard Emmanuel
Grunebach Georgann S.
The DirecTV Group, Inc.
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