campare FSK ,PSK and ASK
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Frequency Shift Keying
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Amplitude-shift keying (ASK), frequency-shift keying (FSK), and phase-shift keying (PSK) are digital modulation schemes.
Explanation:
ASK refers to a type of amplitude modulation that assigns bit values to discrete amplitude levels.
fsk Frequency-shift keying is a frequency modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier signal.
psk Phase-shift keying is a digital modulation process which conveys data by changing (modulating) the phase of a constant frequency reference signal (the carrier wave). The modulation is accomplished by varying the sine and cosine inputs at a precise time.
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