Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2006-06-06
2006-06-06
Urban, Edward F. (Department: 2685)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S182200, C455S192200, C375S344000, C375S326000
Reexamination Certificate
active
07058378
ABSTRACT:
The present invention is related to a method and apparatus for automatic frequency correction of a local oscillator. The apparatus receives a carrier signal. The carrier signal includes a code sequence known to the apparatus. The apparatus downconverts the carrier signal to a baseband signal using the local oscillator. The apparatus performs a block correlation of the samples of the baseband signal with the known code sequence to generate a frequency error signal. The frequency error signal is fed back to the local oscillator to correct the frequency error.
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Bultan Aykut
Grieco Donald M.
Chow Charles
InterDigital Technology Corporation
Urban Edward F.
Volpe and Koenig P.C.
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