US 7,050,388 B2 · Method and system for crosstalk cancellation

Abstract

Signals propagating in one communication channel can generate crosstalk interference in another communication channel. A crosstalk cancellation device can process the signals causing the crosstalk interference and generate a crosstalk cancellation signal that can compensate for the crosstalk when applied to the channel receiving crosstalk interference. The crosstalk cancellation device can include a model of the crosstalk effect that generates a signal emulating the actual crosstalk both in form an in timing. The crosstalk cancellation device can include a controller that monitors crosstalk-compensated communication signals and adjusts the model to enhance crosstalk cancellation performance. The crosstalk cancellation device can have a mode of self configuration or calibration in which defined test signals can be transmitted on the crosstalk-generating channel and the crosstalk-receiving channel.

Claims42

Dependent claims

A signal processing system, for applying a crosstalk estimate to a first communication channel to compensate for crosstalk coupled into the first communication channel from a second communication channel, comprising:

a model, coupled to the second communication channel, operative to generate the crosstalk estimate, comprising:
a waveform shaper comprising a plurality of delay stages coupled to a plurality of respective amplifiers;
and
an adjustable delay coupled to the waveform shaper;
and
a controller, operative to process crosstalk compensated communication signals and adjust the waveform shaper and the adjustable delay.

3 more elements

Dependencies are inferred from the claim text.

Method and system for crosstalk cancellation

Life of this patent

Method and system for crosstalk cancellation

Life of this patent

Abstract

Claims42