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PREFACE Continuing the tradition of the first through the seventh editions of Digital and Analog Communication Systems, this eighth edition provides the latest up-to-date treatment of digital communication systems. It is written as a textbook for junior or senior engineering students and is also appropriate for an introductory graduate course. It also provides a modern technical reference for the practicing electrical engineer. A Student Solutions Manual contains detailed solutions for over 100 selected end-of-the-chapter homework problems. For the selected problems that have computer solutions, MATLAB solution files are available for downloading from the Web. To download the Student Solutions Manual and the MATLAB files, go to www.pearsonhighered.com/couch. One major change for this eighth edition is the addition of more than 100 examples distributed throughout the chapters of the text. Students are always asking for more examples. Most of these new examples have a problem description that consists of only a few lines of text. The solutions for these examples are contained within MATLAB files (downloaded from the Web site given earlier). These files include the procedure for the solution (as described by comment lines in the MATLAB program) and produce computed and plotted solutions. This presentation procedure has several advantages. First, the description for each example takes only a few lines xiii
Page 2: Abbreviations AC ADC ADM AM ANSI AP
Page 6: DIGITAL AND ANALOG COMMUNICATION SY
Page 10: CONTENTS PREFACE LIST OF SYMBOLS xi
Page 14: Contents v 2-8 Discrete Fourier Tra
Page 18: Contents vii 4-16 Transmitters and
Page 22: Contents ix 6-10 Appendix: Proof of
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Page 40: xviii List of Symbols B T transmiss
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Page 52: 2 Introduction Chap. 1 (Many school
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16 Introduction Chap. 1 d Tangent t
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18 Introduction Chap. 1 For ease of
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20 Introduction Chap. 1 In analog s
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22 Introduction Chap. 1 detected an
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24 Introduction Chap. 1 Constraint
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26 Introduction Chap. 1 Code Interl
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28 Introduction Chap. 1 where B is
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30 Introduction Chap. 1 When a conv
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32 Introduction Chap. 1 1-5 A cellu
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C h a p t e r SIGNALS AND SPECTRA C
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36 Signals and Spectra Chap. 2 w(t)
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38 Signals and Spectra Chap. 2 For
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40 Signals and Spectra Chap. 2 V dc
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42 Signals and Spectra Chap. 2 aver
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44 Signals and Spectra Chap. 2 wher
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46 Signals and Spectra Chap. 2 Thes
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48 Signals and Spectra Chap. 2 The
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50 Signals and Spectra Chap. 2 Inte
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52 Signals and Spectra Chap. 2 TABL
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54 Signals and Spectra Chap. 2 Exam
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56 Signals and Spectra Chap. 2 DEFI
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( ( 58 Signals and Spectra Chap. 2
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60 Signals and Spectra Chap. 2 Usin
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62 Signals and Spectra Chap. 2 t w
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64 Signals and Spectra Chap. 2 TABL
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66 Signals and Spectra Chap. 2 wher
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68 Signals and Spectra Chap. 2 Orth
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70 Signals and Spectra Chap. 2 obta
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72 Signals and Spectra Chap. 2 2. I
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74 Signals and Spectra Chap. 2 Pola
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76 Signals and Spectra Chap. 2 PROO
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78 Signals and Spectra Chap. 2 w(t)
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80 Signals and Spectra Chap. 2 PROO
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82 Signals and Spectra Chap. 2 Inpu
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84 Signals and Spectra Chap. 2 is t
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86 Signals and Spectra Chap. 2 From
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88 Signals and Spectra Chap. 2 0 dB
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90 Signals and Spectra Chap. 2 Band
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92 Signals and Spectra Chap. 2 f s
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94 Signals and Spectra Chap. 2 w s
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96 Signals and Spectra Chap. 2 W(f)
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98 Signals and Spectra Chap. 2 MATL
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100 Signals and Spectra Chap. 2 aga
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102 Signals and Spectra Chap. 2 TAB
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104 Signals and Spectra Chap. 2 We
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106 Signals and Spectra Chap. 2 5 T
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108 Signals and Spectra Chap. 2 A =
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110 Signals and Spectra Chap. 2 the
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112 Signals and Spectra Chap. 2 rep
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114 Signals and Spectra Chap. 2 Sol
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116 Signals and Spectra Chap. 2 Sol
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118 Signals and Spectra Chap. 2 v(t
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120 w(t) Signals and Spectra Chap.
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122 Signals and Spectra Chap. 2 2-3
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124 Signals and Spectra Chap. 2 ★
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126 Signals and Spectra Chap. 2 2-6
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128 Signals and Spectra Chap. 2 0.0
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ƒ ƒ ƒ ƒ 130 Signals and Spectra
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C h a p t e r BASEBAND PULSE AND DI
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134 Baseband Pulse and Digital Sign
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( 192 Baseband Pulse and Digital Si
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196 DPCM transmitter Analog input s
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214 24 DS-0 inputs, 64 kb/s each (1
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216 TABLE 3-9 SPECIFICATIONS FOR T-
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238 Bandpass Signaling Principles a
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242 TABLE 4-1 COMPLEX ENVELOPE FUNC
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314 AM, FM, and Digital Modulated S
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320 TABLE 5-1 AM BROADCAST STATION
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338 TABLE 5-2 FOUR-PLACE VALUES OF
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TABLE 5-6 V.32 MODEM STANDARD Item
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386 Baseband signal processing RF c
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C h a p t e r RANDOM PROCESSES AND
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416 Random Processes and Spectral A
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C h a p t e r PERFORMANCE OF COMMUN
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494 Performance of Communication Sy
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508 Upper channel Receiver r(t)=s(t
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518 DPSK signal plus noise in Bandp
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520 QPSK signal plus noise (data ra
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TABLE 7-1 COMPARISON OF DIGITALSIGN
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- f c f c f 566 Performance of Comm
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570 Wire and Wireless Communication
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576 Tip (green wire) POTS line card
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TABLE 8-2 CAPACITY OF PUBLIC-SWITCH
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( 610 Wire and Wireless Communicati
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ƒ ƒ 640 Wire and Wireless Communi
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Channel Broadcast On-the-Air Channe
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Channel Broadcast On-the-Air Channe
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670 Mathematical Techniques, Identi
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678 A-10 TABULATION OF Q (z) Mathem
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A p p e n d i x PROBABILITY AND RAN
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682 Probability and Random Variable
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684 which is identical to Eq. (B-4)
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TABLE B-1 SOME DISTRIBUTIONS AND TH
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ƒ ƒ 704 Probability and Random Va
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710 3. F(a 1 , a 2 ,..., a N ) Prob
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724 Using MATLAB Appendix C Of cour
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726 Using MATLAB Appendix C 6. The
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728 References AT&T, FT-2000 OC-48
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730 References COUCH, L. W., Digita
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732 References HAMMING, R. W., “E
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734 References LIN, D. W., C. CHEN,
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736 References PRITCHARD, W. L., an
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738 References UNGERBOECK, G., “C
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740 Answers to Selected Problems Ch
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742 Answers to Selected Problems 2
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744 Answers to Selected Problems 5-
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746 Answers to Selected Problems h
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748 Index Amplitude shift keying (A
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750 Index Coding/codes (cont.) chan
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752 Index Effective isotropic radia
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754 Index In-phase components, 638
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756 Index Multilevel signaling, 157
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758 Index Process/processing (cont.
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760 Index Signal/signaling (cont.)
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762 Index Two-level data, 165 Two-q
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TABLE 2-2 SOME FOURIER TRANSFORM PA
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