Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
PowerPoint Presentation Materials
For Instructor’s Online Learning Center
Communication Systems
An Introduction to Signals and Noise
in Electrical Communication
Fourth Edition
A. Bruce Carlson
Paul B. Crilly
Janet C. Rutledge
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Chapter Two
Signals and Spectra
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Rectangular pulse train
Figure 2.1-7
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Spectrum of rectangular pulse train
with ƒ0 = 1/4 (a) Amplitude (b) Phase
Figure 2.1-8
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Fourier-series reconstruction of a rectangular pulse train
Figure 2.1-9
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Fourier-series reconstruction of a rectangular pulse train
Figure 2.1-9c
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Gibbs phenomenon at a step discontinuity
Figure 2.1-10
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Rectangular pulse spectrum V(ƒ) = A sinc ƒ
Figure 2.2-2
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Frequency translation of a bandlimited spectrum
Figure 2.3-2
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
(a) RF pulse (b) Amplitude spectrum
Figure 2.3-3
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Graphical interpretation of convolution
Figure 2.4-1
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Result of the convolution in Fig. 2.4-1
Figure 2.4-2
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Two functions that become impulses as   0
Figure 2.5-2
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Raised cosine
pulse.
(a) Waveform
(b) Derivatives
(c) Amplitude
spectrum
Figure 2.5-7