Does anyone know if digital signals (e.g. WIFI) are sent by frequency modulation or amplitude modulation or something else? I read in Wikipedia something about the phase difference between two or more carrier frequencies encoding the ones and zeros but that sounds to me like basically FM. I know the transmission frequencies are much higher than AM or FM which makes sense if you want to send lots of information. I need some simple (simplistic) explanation to follow a simple explanation of AM and FM for my intro class.
kyle
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