Question
Download Solution PDFLet x(t) be a signal with Nyquist rate ω0. Determine the Nyquist rate for y(t) = x(t)cos(ω0t)
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
When we multiply any signal with cos (ω0t) then that signal shifts by ω0
x (t) → X (ω)
If X(ω)
Then x(t) cos ω0t = y(t)
Given:
Nyquist Rate of x(t) is ω0
Let ωm is maximum frequency of x(t)
2ωm = ω0
Now y (t) = x (t) cos ω0 t
So maximum frequency of y (t) = ω0 + ωm
=
=
Nyquist Rate of y (t) =
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