MAT. SCI. & ENG: AN INTO. WILEYPLUS
10th Edition
ISBN: 9781119472001
Author: Callister
Publisher: WILEY
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Chapter 21, Problem 1FEQP
To determine
To find:
The energy of the photon in electron volt
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10-3) similar to Lathi & Ding, Prob. P.6.3-7
The Fourier transform P(f) of a the basic pulse p(t) used in a certain binary communication is shown in the figure
below:
P(f)
1
0.5
0
f₁ = 0.8
√₂ = 1.2
f, MHz
(a) From the shape of P(f), explain at what pulse rate this pulse would satisfy Nyquist's first criterion.
(b) Assuming that the pulse is a raised-cosine pulse, find its rolloff factor.
(c) Find p(t) and verify that this pulse satisfies Nyquist's first criterion in the time domain.
(d) Show how rapidly the pulse decays as a function of t, (i.e., what power of t does the envelope obey for large time
values).
Chapter 21 Solutions
MAT. SCI. & ENG: AN INTO. WILEYPLUS
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