pam by panigrahi
Post on 14-Jun-2015
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pulse amplitude modulation by rajesh panigrahi
TRANSCRIPT
Pulse Amplitude Modulation
Presented by :
Rajesh Panigrahi
1. Baseband signal 2. Sampled signal
Detection Of Natural PAM
• PAM Signal Demodulated PAM Signal
Low pass filter
Detection of Natural PAM
• The PAM signal can be detected(demodulated) by passingthrough a low pass filter.• The Low pass Filter Cut Off Frequency IS Adjusted to Fm sothat all the
frequency ripple is moved and the original• modulating signal is recovered back.
Flat Top PAM
Flat Top PAM
Advantages…Better SNR Due To Incresed Signal Power.Generation Is Easy
Disadvantages…Aperture Effect Reduce Distortion
Flat Top Sampling
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