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The received waveforms are in the pulse-shape form. And yet the demodulator needs to recover the pulse waveform.
Reason: The arriving waveforms are not in the ideal pulse shapes.
Filtering caused ISI and signals appear to be "smeared" and not ready for sampling and detection.
Demodulator goal is to recover baseband pulse with best SNR and free of ISI.
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∙ 11y ago
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