Pulse Modulation
Category : JEE Main & Advanced
Here the carrier wave is in the form of pulses.
(1) Pulse amplitude modulation (PAM) : The amplitude of the pulse varies in accordance with the modulating signal.
(2) Pulse width modulation (PWM) : The pulse duration varies in accordance with the modulating signal.
(3) Pulse position modulation (PPM) : In PPM, the position of the pulses of the carrier wave train is varied in accordance with the instantaneous value of the modulating signal.
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