Method and system for crosstalk cancellation
4 Assignments
0 Petitions
Accused Products
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.
123 Citations
58 Claims
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1-8. -8. (canceled)
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9. A method for processing a first communication signal having crosstalk from a second communication signal comprising the steps of:
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sampling the second communication signal;
processing the sample of the second communication signal to generate a crosstalk emulation signal;
applying the crosstalk emulation signal to the first communication signal to cancel at least some of the crosstalk;
generating a third communication signal based on the application of the crosstalk emulation signal;
analyzing the third communication signal; and
adjusting the crosstalk emulation signal based on the analysis. - View Dependent Claims (10, 13, 14, 15)
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11-12. -12. (canceled)
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16-43. -43. (canceled)
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44. A method for reducing crosstalk that a first communication signal has imposed on a second communication signal, resulting in a third communication signal comprising the second communication signal and the imposed crosstalk, the method comprising the steps of:
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obtaining a sample of the first communication signal;
generating an estimate of the imposed crosstalk in response to processing the sample;
temporally aligning the estimate to the imposed crosstalk; and
reducing the imposed crosstalk in response to applying the temporally aligned estimate to the third communication signal. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. A method for reducing communication interference, comprising the steps of:
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obtaining a sample of a first communication signal, transmitting on a first communication channel and producing interference on a second communication channel;
generating an estimate of the produced interference in response to processing the sample according to a parameter;
reducing the interference on the second channel in response to applying the generated estimate to the second communication channel;
producing test interference in response to transmitting a test signal on the first communication channel; and
adjusting the parameter in response to analyzing the produced test interference. - View Dependent Claims (56, 57, 58)
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Specification