Instructions for Pulse Amplitude Modulation (PAM)

Step 1: Click on 'Generate Message' button to generate input message signal
Step 2: Then click on 'Generate Carrier' button to generate carrier signal
Step 3: You can change the message and carrier signal frequencies from the input field. The carrier frequency has to be more than the message frequency
Step 4: Click on 'Generate PAM Signal' button to generate Pulse Amplitude Modulated (PAM) Signal

Message Frequency in Hz:

Square Carrier Frequency in Hz:

PAM

Instructions for Pulse Amplitude Demodulation

Step 1: The reconstruction filter is used to recover the original message signal from the sampled PAM signal (typically by multiplying with the carrier and then low-pass filtering)
Step 2: You can Demodulate the PAM Signal clicking on the 'Demodulate PAM Signal' button
A reconstruction filter is a low-pass filter (LPF) with cutoff at or just above the message frequency which passes only the baseband and blocks higher-frequency copies

Cut-off Frequency (Hz)

PAM_Demodulation