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Date: 28-11-2021
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In order for a band-limited (i.e., one with a zero power spectrum for frequencies ) baseband (
) signal to be reconstructed fully, it must be sampled at a rate
. A signal sampled at
is said to be Nyquist sampled, and
is called the Nyquist frequency. No information is lost if a signal is sampled at the Nyquist frequency, and no additional information is gained by sampling faster than this rate.
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