Pulse or digital communications – Receivers – Interference or noise reduction
Patent
1995-06-07
1997-11-25
Chin, Stephen
Pulse or digital communications
Receivers
Interference or noise reduction
3647241, H04B 110
Patent
active
056920202
ABSTRACT:
An integrated digital communication system utilizing multilevel vestigial sideband transmission is provided. The communication system receives a multi-level pulse-amplitude modulated digital signal from a limited bandwidth channel. The system includes processing stages which demodulate, sample and filter the incoming signal prior to recovery of the digital data. Other stages recover the timing and lock on to the frequency and phase of the transmitted signal, as well as provide for automatic gain control. An adaptive equalizer, error correction circuitry, and an output interface recover the digital data and provide for transfer to other devices.
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Bickel Arthur S.
Braun Robert T.
Chin Stephen
Clark Ronald J.
Discovision Associates
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