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US 2010/0135482 A1Published application
Interference cancellation system
AssigneeAdaptive Spectrum and Signal Alignment, Inc.
InventorsSumanth Jagannathan, Chiang-yu Chen, John Cioffi
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Abstract
An adaptive interference cancellation system is described. In one example the system operates by receiving a data signal using a DSL (Digital Subscriber Line) and receiving a reference signal, the reference signal corresponding, in part, to noise on the data signal. The reference signal is classified and a noise cancellation signal is applied to the data signal based on the classification.
Claims16
A method comprising:
- receiving a data signal using a DSL (Digital Subscriber Line);
- receiving a reference signal, the reference signal corresponding, in part, to noise on the data signal;
- classifying the reference signal wherein classifying the reference signal comprises estimating statistical properties of the reference signal and comparing the statistical properties to a set of known properties;
- and
- applying a noise cancellation signal to the data signal based on the classification.
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An apparatus comprising:
- a data receive chain to receive a data signal;
- a reference signal receive chain to receive a noise signal;
- a noise classification module to characterize the noise signal;
- and
- a noise filter to apply a noise cancellation signal to the data signal based on the characterization of the noise signal.
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Dependencies are inferred from the claim text.