Method and apparatus for encoding and decoding digital communications data
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United States of America Patent
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Aug 21, 2007
Grant Date -
Jun 12, 2003
app pub date -
Aug 16, 2002
filing date -
Aug 17, 2001
priority date (Note) -
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Abstract
In one aspect, the present invention is a system and technique that provides for the systematic development or implementation of codes that increase the robustness of systems employing, for example, PAM-n transmission techniques. The system and technique of this aspect of the invention eliminate, minimize, reduce or limit transitions between extreme signaling levels. As a result, the slew rate employed and/or required by the transmitter may reduce crosstalk and intersymbol interference, and provide for wider 'eye' openings from the perspective of the receiver.
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