Device for equalizing channel-distorted signals

Details Device for equalizing channel-distorted signals Device for equalizing channel-distorted signals

1997-08-22

2000-04-04

Chin, Stephen

Pulse or digital communications

Equalizers

375232, 333 18, H03H 730

Patent

active

060470240

ABSTRACT:
An equalization device has a digital equalizer for joint tuning of a data-carrying signal distorted by analog transmission. The digital equalizer includes a closed-loop automatic gain control (AGC) circuit for applying a compensatory frequency-independent gain to the distorted signal followed by a frequency filter for applying a compensatory frequency-dependent gain to the signal. Joint tuning produces an output signal which more closely resembles the originally transmitted signal, facilitating recovery of implicit clock and more reliable data recovery. The digital equalizer may be advantageously stage-implemented as a preliminary digital equalizer which is preceded by an analog equalizer and followed by a final digital equalizer.

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patent: 5923708 (1999-07-01), Mutoh

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