pulse modulation (pam)
DESCRIPTION
TRANSCRIPT
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Pulse Amplitude Modulation (PAM)
VPAM must directly proportional with VM
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Signal shown of PAM Signal
In the noise aspect, this type of signal is EASILY EFFECTED by noiseThis is type of flat-top sampling signal
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Construction of PAM signal
Time Domain Frequency Domain
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Sampling Methods in PAM
Ideal and natural sampling signal can eliminate noiseIdeal sampling signal is difficult to generate
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Detection of PAM Sample Signal
fo for the LPF must within the range of fm < fo < fs - fm
fs = 2fm but usually fs > 2fm because to have GUARDBAND
fm = fs / 2 = 1 / 2T
ms(t) = VPAM
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Generation and Detection of PAM
Generation of PAM
Detection of PAM