Drawbacks of Pulse Position Modulation

In Pulse Position Modulation, the drawbacks are


a) synchronization is required between transmitter and receiver
b) large bandwidth is required as compared to PAM
c) none of the above
d) both a) and b)

Correct Answer: both a) and b)


In Pulse Position Modulation, the position of the pulse of the carrier is varied with reference to the position of a reference pulse. The position is varied in accordance with the sampled modulating signal. In PPM, synchronization is required between the transmitter and the receiver. Large bandwidth is required in Pulse position Modulation as compared to the Pulse amplitude modulation.
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