La " modulation d'amplitude en quadrature " (soit Quadrature Amplitude Modulation, ou QAM, en anglais) est une forme de modulation d'une porteuse par modification de l'amplitude de la porteuse ...
Modulation is fundamental to electronic communications. The modulating signal might be analog in nature (voice or music) or digital bit streams. Most modern communication systems are digital, using ...
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Varying the voltage of a carrier or a direct current in order to transmit analog or digital data. Amplitude modulation (AM) is the oldest method of transmitting human voice electronically. In an ...
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