Analog and Digital Communication Systems

285 Pages·1996·68.01 MB·English

by  martin s roden

ANALOG AKD

DicitAl

COMMUNICATION

SYSTENS

Ci {0
Fourth Edition

Martin S. Roden

Department of Electrical and Computer Engineering
California State University, Los Angeles

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Contents

PREFACE x
INTRODUCTION FOR THE STUDENT itt

1. INTRODUCTION 1
10 Preview 1

11 Tee Need to Communicate 2

12 TheEnvironment 3
TR Disertine 3
122 Type Communication Chanel, 9
13 Typeset Signals 14
TEP alo Signal 13

132 Analog Sampled Stns, 1S
133. Disa Sigal 16

14 Elements ofa Communication System 16
Problems 18

2. SIGNAL ANALYSIS 20
20 Preview 20
21 Fourier Series 21
22 Complex Fourier Spectum (Lime Specteum) 28
23° Fourier Transform 29
24 Singularity Funstions 32
25 Convolution 41

251" Gropicl Contoion #8
252. Pareals Theor 32
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26

20

a

43

Proview 68
‘The System Function 68,
Comples Transfer Faction 71
Filters 74

SALT" Mea owas te 75
35.2 det tandpe Fes 76
Causality 78
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SSD Lowpas ier 80

332. Banas Fer 86
Active Files §7
‘Time-Bandwidh Product 88
Specta Analysis 92
Problems 96

ily Encountered Density Futons 112
121 Gatsion Rann Vorb, 112

Contents
6

44 White Noise 128
45. Narrowband Noise 132
46 Signal-toNoise Ratio 137
47 Matched Fier 139
Problems 143
BASEBAND TRANSMISSION 153
50 Proview 153
5.1 Analog Baseband 183,
52 TheSampling Theorem 134
53. Diseret Bascband 168
S31" alse Mouton 185.
532, Tine Disiion Malpiexing 168
S33 Colt 73
‘S35. Pale Potion Modan. 178
54 Recviven 180
S41 Analg Baseband Reception 180
542. Dire Bareband Rec 18)
SS Performance 183
55" Anal Rashond, 186
552 Dison asad 185
Problems 187
AMPLITUDE MODULATION 193
60 Preview 193
61 Concept of Modulation 193
62 Double Sideband Suppressed Carrier 195
63, Double-Sidehand Transmited Caner 201
64 Modulators 204
65 Demodulators 212
651 Gated Donde 213
1652 Square fae Demotaaioe 214
{653 Carter Recovery Trononed Carrier
654 cohen Demodaon 218,
35 Bmlope Deer 2
65: Igraed Cro Medeor ond
Demadulors 228
66

Broadcast AM and Supemeteradyne Receiver 224
“ Contents

(61 Envelopes and Pre-Eavelopes 231
68 Single sideband ($58) 235

69 VuiguSestand 208
' 610 Hyd Smad AM Sus 20
Pearman 246
i TIT Se Deen 307
Sts, Sete ges a
612 Televi. 256
Probie 264
7. ANGLE MODULATION ae

20 Preview 272
71 Insantancous Frequency 272

12 ropeny Manton 278
: 23 Phe Maton 27
14 Nemo Angle Modan, 28
15) Widen 21
16 Motiion 29
17° Denar 22
74 eat FM an Sco 0
19° Ptamene 30
710 Conpatan sf S0n4_ 10
Psion 3H

8. SOURCE ENCODING 316
80 Preview 316
8.1 Analog-o-Digit Conversion 316
82 Digita-10-Amaog Conversion 326
a3 Baseband 328

Digit
SLD" Signal Fama, 228
852 Pie Ce Meiaton 338

84 Quantization Noise 355,
Contents

9. CHANNEL ENCODING

376

90 Preview 376

9.1 Signe! Compression an Entropy Coding 376
GAL formation an Ep 8
S12 Chae Capos 2
814 Dota: Compression, 292

9.2. Boe Control Coding 393
G21 Liner Block Coding, 393
922. Liner Algebra 397
923 Bhar arubmene 329
824 Alebate Cas, 401

9.3 Convolutional Cding 16
94 Cela for Code Selection 423
Problems 424

40, BASEBAND DIGITAL COMMUNICATION

100 Preview 431

101 Timing 432
ILI Symtoms 432,
1012. Nonlcor Clack Recon #28
1015 Frame Saco 7
IY Code jor Syechrnraon 490
1013 eng Bromple 41

102 tnwisymbol interference 445
12 Egulcaion 0

103 Baseband Detection 451
TSP SileSanple Deleon 451
1032 ‘Binoy atthe Fier Beto 452

104 Performance of Digits Baseband 455
IN Sinle-saple Decor 485
1042 Binary Matched Fler Daca 458

Probleme 465

11. DIGITAL MoDULATION

1.0 Preview 470

LL Amplitude shit Keying 470
Uta ASK Speman 72
12 Medalaors 42
TI AS emosionon 472
ie Date Pepomance 78
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Frequerey Shi Keying 479
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N22 Wan'PtK 482

135 Moun 93

1124 Demon 8
2S Delete Performance $35

Phase Shift Keying 492
TST BPSK Spectr 96
1132 Ouadrtee PSK, 196
TCs Minuam Sige eying 48
134 Different PSK 30!
3S Modaarors 30

135 Denaro S02
MA? Performance, 507

N38 Man PSK SIT

Hybrid Systems 512
Modems Sid
Problems S18

12, DESIGN CONSIDERATIONS

1

2

Analog Design Tade-offs 525,
BL Bond 23

112 Reomamce 526

TE1S, Sem Comply 526

‘Cane Studies 935
TAY” Paging Stems 535.

1222 Caller Tephone 538
1233 Global Pstnine Stive 540
1234. Foes 40

TBS Miewen, 546

APPENDIX I: REFERENCES

Ccontente

567
“The foun edition of Analog and Digital Communication Sputems i peatly modiied
and eohunced versio ofthe cvlir editions. The pital commanistons potion ofthe
‘exthss been considerably expanded and rergstized. The mata resented in aman
ner that emphasizes the unifying principles governing all forms of communication,
‘whether analog or dil, Pracial design applications und onipter exercises have been
expanded Is particular, many ofthe graphs re preped and Tormulas sre solved using
(MATLAB! or Mathcad™. In sch ese, the instruction sets presented to give the st
ent patie in using these important oo,

In adciton to presenting a unified approach to analog and digital communication,
‘his text strikes balance betwee theory und practice, While the undergraduate engincer-
ing student needs afm foundation inthe thecetical aspects of the subject i i also in
‘oma that Reo she Be exposed to the real world of engineering design. This serves two
Sniicant purposes. Theft sh an introdtin othe el word acs strong mo.
"vain actor Te “pow” generation noes sme “touchy-feely” to motivate the spending
‘ot hour digging through mathemusial formulae. The second purpose of real-world eng
ering iso ease the transition from academia to the profession. A praut's frst expen
ence with real-weeld design should not be a great shock. but instead should bea atural
transition fromthe classroom eavionment.

‘The book is intended as an intesuctory text forthe sty of analog and gal
‘communication systems, with or witout nose, Although all necessary backgroud m=
fal has teen included, prerequisite courses in near sytoms analysis and in probability

The ex sesses a mathematical systems approach wall phases ofthe subject mat

‘Te mathematics wed thoughout in ax claentary ax possible, buts carefully chosen
$038 not contradict any more sophisticated spproach that may eventually be required
‘An attempt i made o apply inlive echngues price to grinding trough the mathem

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