Method and system for crosstalk cancellation
First Claim
1. 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:
- 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.
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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.
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Citations
20 Claims
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1. 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 (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. 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 (16, 17, 18, 19, 20)
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Specification