engineering recuitment GATE ECE 2023-24 Test Series Communication Systems Pulse Modulation Delta Modulation (DM)
In the output of a DM encoder, the consecutive pulses are of the same polarity during the time interval t1 < t ≤ t2. This indicates that during this interval
1
the signal is sampled at the Nyquist rate
2
the modulator is suffering from granular noise
3
The input to the modulator is essentially constant
4
The input to the modulator is not constant