Method and system to efficiently modulate data while reducing DC drift
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United States of America Patent
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Issued Date -
Aug 26, 2004
app pub date -
Feb 24, 2003
filing date -
Feb 24, 2003
priority date (Note) -
Abandoned
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Abstract
A method and system of reducing inter symbol interference (ISI) in a multibit symbol modulation scheme. Adjacent symbol pulses are forces to have opposite polarities. Additional phase slots are added to the symbol to modulate any bits lost because amplitude modulation cannot be used. The width of the phase slots is reduced as a result of reduced DC drift and, therefore, ISI.
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