Device and method for identification and cancellation of crosstalk
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United States of America Patent
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Apr 7, 2015
Grant Date -
Nov 8, 2012
app pub date -
Jan 5, 2011
filing date -
Jan 7, 2010
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Abstract
Disclosed are devices and methods for identification and cancellation of interfering signals, especially far-end crosstalk (FEXT), in a communication system with at least two pairs of wires of a balanced line bundle. The devices include at least a cancellation circuit, which is connected downstream to dead time elements, an interference characteristic detection device and a cancellation control unit, which controls a setting of filter coefficients of an adaptive filter and the cancellation signal source. The adaptive filter is configured as a digital cancellation filter having filter coefficients separated in time by a first delay element having the delay time T, and having an adjustable additional delay time t, whereby the setting of the additional delay time τ takes place together with the setting of filter coefficients.
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