Category: Keying


Amplitude shift keying – ASK modulation

Amplitude shift keying is a modulation technique in digital communication. It is a form of amplitude modulation that represents the digital data in discrete amplitude levels. For a binary data, there are two levels...


Phase shift keying – PSK modulation

Phase shift keying (PSK) is a digital communication method in which the phase of a transmitted signal is varied to represent digital states. For the binary form of PSK called binary phase-shift keying (BPSK),...


Frequency shift keying – FSK modulation

Frequency shift keying (FSK) is a frequency modulation technique in digital communication. FSK transmits through discrete frequency changes of a carrier signal at a constant amplitude and phase.  For the binary form of FSK, Binary...