Offset and decision feedback equalization calibration
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United States of America Patent
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Jun 30, 2015
Grant Date -
Aug 14, 2014
app pub date -
Aug 10, 2012
filing date -
Sep 12, 2011
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Abstract
A decision feedback equalizer is calibrated to compensate for estimated inter-symbol interference in a received signal and offsets of sampling devices. The decision feedback equalizer is configured so that an output signal of a sampling circuit represents a comparison between an input signal and a reference of the sampling circuit under calibration. An input signal is received over a communication channel that includes a predetermined pattern. The predetermined pattern is compared to the output signal to determine an adjusted reference for configuring the sampling circuit that accounts for both offset and inter-symbol interference effects.
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