Describe Two of the Four Methods of Digital Signal Modulation

Question

Examlex · Accepted Answer

The Answer is Amplitude shift keying (ASK) is a binary modulation technique in which the height of the carrier can be changed to represent a 1 or 0 bit. In ASK, a 1 bit has a carrier signal, and a 0 bit has no signal (in other words, voltage versus no voltage).

Frequency shift keying (FSK) is a binary modulation technique in which the carrier signal’s frequency is changed to represent a 1 or 0 bit.

Phase shift keying (PSK) is a binary modulation technique similar to phase modulation, in which the signal’s relative starting point is changed to represent a 1 or 0 bit and changes whenever the bit changes from one to the other. Because PSK is a binary method, the signal starts and stops.

Frequency division multiplexing (FDM) is an RF signaling method in which multiple base signals are modulated on different carrier waves and combined to form a composite signal.

Describe Two of the Four Methods of Digital Signal Modulation

Definitions: