to accompany
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CommunicationSystems s
AnIntroductiontoSignalsandNoise
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inElectrical Communication
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Fourth Edition s
A. Bruce Carlson
s s
Rensselaer Polytechnic Institute
s s
Paul B. Crilly s s
University of Tennessee s s
Janet C. Rutledge s s
University of Maryland at Baltimore
s s s s
,Solutions Manual to accompany
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COMMUNICATION SYSTEMS: AN INTRODUCTION TO SIGNALS AND NOISE IN ELECTRICAL COMMUNICATION,FOURTH
s s s s s s s s s s s
EDITION
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A. BRUCE CARLSON, PAUL B. CRILLY, AND JANET C. RUTLEDGE
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Published by McGraw-Hill Higher Education, an imprint of The McGraw-Hill Companies, Inc., 1221 Avenue of the
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s Americas,New York, NY 10020. Copyright © The McGraw-Hill Companies, Inc., 2002, 1986, 1975, 1968. All rights
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reserved.
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The contents, or parts thereof, may be reproduced in print form solely for classroom use with COMMUNICATION SYSTEMS: AN
s s s s s s s s s s s s s s s s s s
INTRODUCTION TO SIGNALS AND NOISE IN ELECTRICAL COMMUNICATION, provided such reproductions bear copyright
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notice, but may not be reproduced in any other form or for any other purpose without the prior written consent of The
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McGraw-Hill Companies, Inc., including, but not limited to, in any network or other electronic storage or transmission, or
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broadcast for distance learning.
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www.mhhe.com
,Chapter 2 s
2.1-1
Ae j T0/2ss Ae n m
f
∫e j2Ae
p ( m n )f t
dt jf
s
cn s s s s0 s
jf
sinc(m n)
s s
s
s s s s s
T0
s
T0 s /2
s
0 otherwise
2.1-2
c0 v(t) =0
T 2p nt T0 s /2 s 2p nt 2A pn
c2 Acos dt ( A)cos dt sin
s s s s s s s s s
s
s s s s s s
s s
n
T0 s
T T pn s 2
s
T s s / 4s
0
0 0 0
n 0 1 2 3 4 5 6 7
cn 0 2A/p s s s
0 2A/3p
s s s
0 2A/5ps s s
0 2A/7p s s s
argcn s
0 180 0 180
2.1-3
c0 = v(t) =A / 2
s s s s s
c2
s
T /2
s 2At 0s s 2p nt s A A
s s
A osc
n
T 0 s
0 dt sinp n (cosp n 1)
T0 T pn (p n)2
s s s s s s
s
0 s s s
n 0 1 2 3 4 5 6
cn 0.5A 0.2A 0 0.02A 0 0.01A 0
argcn s
0 0 0 0
2.1-4
2-1
, 2 T0 s /2 2p t
c 0 Acos
s s
s
s s s s
(cont.)
T T
0
ss
0
0 0
2-2