Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2008-04-15
2008-04-15
Ghebretinsae, Temesghen (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
C375S325000, C375S371000
Reexamination Certificate
active
07359460
ABSTRACT:
An improved data communication receiver technique is provided which avoids demodulation errors due to abrupt phase changes. A receiver is provided for processing an incoming digitized signal. The receiver comprises a pre-processing portion, a phase error correction unit and a signal evaluation unit. The pre-processing portion is adapted to process the digitized signal for providing a non-coherent pre-processed signal. The phase error correction unit is adapted to correct a phase error of the non-coherent pre-processed signal and output a coherent signal. The signal evaluation unit is adapted to extract information from the non-coherent pre-processed signal and to output a data signal representing the extracted information. The phase error correction unit and said signal evaluation unit are configured to operate simultaneously for a predetermined time.
REFERENCES:
patent: 5128626 (1992-07-01), Iwasaki
patent: 5296820 (1994-03-01), Kawabata
patent: 5903556 (1999-05-01), Matui
patent: 5982807 (1999-11-01), Snell
patent: 6549583 (2003-04-01), Crawford
Hanusch Thomas
Sachse Eric
Schmidt Michael
Advanced Micro Devices , Inc.
Ghebretinsae Temesghen
Heter Erik A.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
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