Pulse or digital communications – Receivers – Automatic baseline or threshold adjustment
Patent
1998-09-30
2000-03-14
Pham, Chi H.
Pulse or digital communications
Receivers
Automatic baseline or threshold adjustment
375319, 375371, 371 1, H04L 2506, H04L 2510
Patent
active
06038266&
ABSTRACT:
The invention is a receiver front end for a data communications system having adaptive correction for intersymbol interference, DC offset, baseline wander, and flat loss and related method. Each of the compensation circuits is adaptive and is controlled by adaptation logic via a digital feedback loop including a digital integrator for providing perfect or near-perfect integration of the adaptation algorithm feedback error signal. The architecture further utilizes multiple comparators, including continuous-time and clocked comparators, for separately detecting various aspects of the received data signals that are used to determine the signal degradation characteristics needed to generate error signals for the adaptation feedback loops.
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Lee Kathleen Otis
Leonowich Robert Henry
Shoval Ayal
Lucent Technologies - Inc.
Pham Chi H.
Webster Bryan
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