Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2005-10-07
2010-06-15
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C370S206000, C370S208000, C370S210000, C370S236000, C370S342000, C370S343000, C370S480000, C375S135000, C375S296000
Reexamination Certificate
active
07738573
ABSTRACT:
A crest reduction system and method. The inventive system includes a first circuit for suppressing peak amplitudes of an input signal and providing a peak amplitude suppressed signal in response thereto and a second circuit coupled to the first circuit for rejecting intermodulation distortion in the amplitude suppressed signal. In the illustrative implementation, the first circuit is a peak amplitude suppressor having circuitry for computing an amplitude of the input signal and for computing a gain factor for the input signal in response thereto. In the best mode, the gain factor is obtained from a lookup table. The peak amplitude suppressor further includes a multiplier for applying the gain factor to the input signal. In the illustrative embodiment, the second circuit includes a plurality of bandpass filters and a summer for combining the outputs thereof.
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Cai Khiem V.
Devendorf Don C.
Kent, III Samuel Davis
Liu Shuwang
Microelectronics Technology Inc.
Patel Dhaval
The Villamar Firm PLLC
Villamar Carlos R.
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