TEST BANK FOR Digital Communications 5th Edition By Proakis Salehi

Chamberlian School of Nursing

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Exam (elaborations) TEST BANK FOR Digital Communications 5th Edition By Proakis Salehi (Instructor Solution Manual)

Exam (elaborations)

Exam (elaborations) TEST BANK FOR Digital Communications 5th Edition By Proakis Salehi (Instructor Solution Manual)
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November 2021

2021/2022

A+
a. ˆx(t) = 1 Z ∞ −∞ x(a) t − a da Hence : −ˆx(−t) = −1 R ∞ −∞ x(a) −t−ada = −1 R −∞ ∞ x(−b) −t+b (−db) = −1 R ∞ −∞ x(b) −t+bdb = 1 R ∞ −∞ x(b) t−b db = ˆx(t) where we have made the change of variables : b = −a and used the relationship : x(b) = x(−b). b. In exactly the same way as in part (a) we prove : ˆx(t) = ˆx(−t) c. x(t) = cos !0t, so its Fourier transform is : X(f) = 1 2 ...
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TEST BANK FOR Digital Communications 5th Edition By Proakis Salehi

Chamberlian School of Nursing

Exam (elaborations) TEST BANK FOR Digital Communications 5th Edition By Proakis Salehi (Instructor Solution Manual)