Systems and methods for characterizing transmission lines using broadband signals in a multi-carrier DSL environment
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United States of America Patent
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Jun 26, 2012
Grant Date -
Aug 5, 2010
app pub date -
Apr 8, 2010
filing date -
Aug 10, 2000
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Abstract
Using DSL modems as data collectors, the modems processes the data to, for example, allow easier interpretation of the line characteristics. In particular, the modems postprocess the data including calibration, filter compensation, determination of the SNR medley from the bits and gains tables and rate conversion. The interpretation process uses the postprocessed data and determines loop characterization, interferer detection, a data reduction estimation and a data rate estimation. The outputs of these determinations least allow for the characterization of the line conditions between the two modems.
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