Method and apparatus for optimizing dynamic range in DMT modems
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United States of America Patent
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Feb 18, 2014
Grant Date -
Apr 18, 2013
app pub date -
Dec 4, 2012
filing date -
Apr 27, 2009
priority date (Note) -
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Abstract
A digital subscriber line XDSL communication system for optimizing dynamic range in digital multi-tone modulated (DMT) modems. The system comprises a digital subscriber line access multiplexer (DSLAM) and at least one modem. The DSLAM distributes a near end crosstalk (NEXT) model of anticipated disturbance from neighboring disturber subscriber lines. The at least one modem has a transmit path and a receive path. The at least one modem couples to the DSLAM and is responsive to the distributed NEXT model to adjust a dynamic range of an analog portion of the receive path to accommodate the anticipated disturbance modeled in the distributed NEXT model.
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