What happens in Pulse time modulation (PTM)?

In Pulse time modulation (PTM),

Options:

a) Amplitude of the carrier is constant
b) Position or width of the carrier varies with modulating signal
c) Pulse width modulation and pulse position modulation are the types of PTM
d) All of the above

Correct Answer: All of the above

Explanation:

In Pulse time modulation (PTM), amplitude of the carrier is kept constant and the Position or width of the carrier varies with the amplitude of the modulating signal at the time of sampling. Pulse width modulation and pulse position modulation are the types of Pulse Time Modulation.

As there is no variation in the amplitude of the carrier, the noise may be easily removed at the receiver.