Method and apparatus to control operation of an equalizer

Details Method and apparatus to control operation of an equalizer Method and apparatus to control operation of an equalizer

2005-06-22

2009-02-03

Corrielus, Jean B (Department: 2611)

Pulse or digital communications

Equalizers

Automatic

Reexamination Certificate

active

07486728

ABSTRACT:
A method and an apparatus to control an equalizer. A signal to noise ratio of an output of the equalizer is measured, the measured signal to noise ratio is fed back to the equalizer controlling apparatus, and convergence information of the equalizer is monitored and at the same time effective tap information of the equalizer is monitored. Accordingly, one or more taps can be selected to perform equalization in the equalizer and to control operation of the equalizer. Thus, it is not necessary to estimate channel information in order to properly operate the equalizer. Thus, since the channel information need not be estimated, a configuration of the equalizer is relatively simple. Additionally, it is possible to select a proper tap depending on a change in a channel environment and to update a corresponding tap coefficient. Accordingly, performance can be improved.

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