TEST BANK FOR Principles of Communication Systems, Modulation and Noise 5th Edition By R. E. Ziemer and W. H. Tranter
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Exam (elaborations) TEST BANK FOR Principles of Communication Systems, Modulation and Noise 5th Edition By R. E. Ziemer and W. H. Tranter (SOLUTION MANUAL)
- Exam (elaborations) • 330 pages • 2021
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Problem 2.1 
For the single-sided spectra, write the signal in terms of cosines: 
x(t) = 10cos(4πt + π/8) + 6 sin(8πt + 3π/4) 
= 10cos(4πt + π/8) + 6 cos(8πt + 3π/4 − π/2) 
= 10cos(4πt + π/8) + 6 cos(8πt + π/4) 
For the double-sided spectra, write the signal in terms of complex exponentials using Euler’s 
theorem: 
x(t) = 5exp[(4πt + π/8)] + 5 exp[−j(4πt + π/8)] 
+3 exp[j(8πt + 3π/4)] + 3 exp[−j(8πt + 3π/4)] 
The two sets of spectra are plotted in Figures 2.1 and 2.2...
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