In ________,the two binary values are represented by two different amplitudes of the carrier frequency.Commonly,one of the amplitudes is zero.One binary digit is represented by the presence,at constant amplitude,of the carrier,the other by the absence of the carrier.
A)amplitude shift keying
B)phase shift keying
C)frequency shift keying
D)high density bipolar-3 zeros

Question

Quizplus · Accepted Answer

The description given matches the technique of Amplitude Shift Keying (ASK), where two different amplitudes of the carrier frequency are used to represent two binary values. One amplitude is typically set to zero, and the presence or absence of the carrier signal at a constant amplitude represents the two binary digits. Phase shift keying (PSK) and frequency shift keying (FSK) use variations in the phase and frequency of the carrier signal, respectively, to represent binary digits. The choice D, high density bipolar-3 zeros, is not a modulation technique but a coding scheme used in digital telecommunications.

In ________,The Two Binary Values Are Represented by Two Different