Types of analog pulse modulation systems

Q.  Types of analog pulse modulation systems are
- Published on 16 Oct 15

a. Pulse amplitude modulation
b. Pulse time modulation
c. Frequency modulation
d. Both a and b

ANSWER: Both a and b
 
In pulse modulation systems, the carrier is a train of pulses rather than a continuous signal. The parameters of the pulses are varied according to the instantaneous value of the modulating signal. There are two types of pulse modulation systems:
- Pulse amplitude modulation
- Pulse time modulation

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