Amplitude modulation: Difference between revisions
From Glossary of Meteorology
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Revision as of 16:25, 26 January 2012
amplitude modulation[edit | edit source]
Changing the amplitude of a carrier wave by some means so that the resultant waveform transmits a signal conveying information.
For example, if the carrier wave with angular frequency ω is cos(ωt), the corresponding amplitude-modulated signal is where g(t) is a function that varies more slowly with time than does the carrier wave.
Compare frequency modulation.
Compare frequency modulation.
Changing the amplitude of a carrier wave by some means so that the resultant waveform transmits a signal conveying information.
For example, if the carrier wave with angular frequency ω is cos(ωt), the corresponding amplitude-modulated signal is
Compare frequency modulation.
For example, if the carrier wave with angular frequency ω is cos(ωt), the corresponding amplitude-modulated signal is
where g(t) is a function that varies more slowly with time than does the carrier wave.
Compare frequency modulation.
