Amplitude Modulation
Def:Amplitude modulation (AM) is a method of impressing data onto an alternating-current (AC) carrier waveform.The highest frequency of the modulating data is normally less than 10 percent of the carrier frequency.
$ x(t) \longrightarrow\otimes\longrightarrow y(t)=x(t)c(t) $
$ \uparrow $
c(t)
