X-Nico

3 unusual facts about Nyquist ISI criterion


Nyquist ISI criterion

We multiply such a h(t) by a sum of Dirac delta function (impulses) \delta (t) separated by intervals Ts This is equivalent of sampling the response as above but using a continuous time expression.

In practice this criterion is applied to baseband filtering by regarding the symbol sequence as weighted impulses (Dirac delta function).

Behzad Razavi, "RF Microelectronics", Prentice-Hall, Inc., 1998.



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