Digital transmission system
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United States of America Patent
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-
Aug 18, 1998
Grant Date -
N/A
app pub date -
Oct 31, 1995
filing date -
Oct 31, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A waveform generating system generates one or more quadrature amplitude modulated (QAM) spectrum pairs which are combined with a frequency modulated (FM) spectrum in the center. The QAM spectrums are offset in frequency to result in a gap in the center to allow combining of the FM spectrum without interference.
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