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Quadrature amplitude modulation
Meaning
Noun
●
In Radio:
A
modulation
scheme
that
conveys
data
by
applying
amplitude modulation
to two
carrier waves
at once
. These two
waves
, usually
sinusoids
, are
out of phase
with
each other
by 90° and are thus called
quadrature
carriers
. Commonly
abbreviated
QAM.
Sourced from
Wiktionary
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