DSL transmission system with far-end crosstalk cancellation
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United States of America Patent
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Jan 17, 2006
Grant Date -
Jul 5, 2001
app pub date -
Dec 14, 2000
filing date -
Dec 14, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a far-end crosstalk canceling circuit for a digital subscriber line transmission system, the transmission system including a plurality of line termination modems receiving discrete multitone symbols from corresponding network termination modems over a plurality of transmission channels. The invention estimates the modulated data actually transmitted by the network termination modems from the frequency components of the discrete multitone symbols received by the line termination modems and to evaluate the far-end crosstalk as a linear combination of these estimates. Far-end crosstalk cancellation for all the line termination modems is also provided in a centralized manner.
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