Which digital modulation technique is similar to frequency modulation?
A) amplitude shift keying
B) frequency shift keying
C) phase shift keying
D) All of the above

Question

Quizplus · Accepted Answer

Frequency shift keying (FSK) is similar to frequency modulation (FM) in the analog domain. FSK varies the frequency of the carrier signal to represent digital data, just like FM varies the frequency of the analog signal to represent information. Amplitude shift keying (ASK) and phase shift keying (PSK) modulate the amplitude and phase of the carrier signal, respectively, and are not directly analogous to FM.

Which Digital Modulation Technique Is Similar to Frequency Modulation