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Signals and Systems by Smarajit Ghosh

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1.14 SAMPLING THEOREM

If sampling frequency is greater than or equal to the Nyquist rate of the message signal then perfect reconstruction of a sampled signal at the receiver is possible. As per this theorem, we can write that

 

Sampling rate Nyquist rate (2Fmax).

 

A relationship between t and n of continuous-time and discrete-time signals is obtained during periodic sampling.

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