Modulation is the process of converting data into electrical signals for its transmission purpose. Modulation techniques are divided into two main types i.e. Continuous Wave Modulation and Pulse Modulation.
These are further divided into different parts:
1: Continuous Wave Modulation
a: Amplitude Modulation
b: Angle Modulation
Frequency Modulation
Phase Modulation
2: Pulse Modulation
a: Digital Modulation
Pulse Code Modulation (PCM)
b: Analog Modulation
Pulse Amplitude Modulation (PAM)
Pulse Width Modulation (PWM)
Pulse Position Modulation (PPM)
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