Understanding Telecommunications and LightWave Systems - John G Nellist

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Résumé :
Wer hat noch nicht von den Fortschritten der Telekommunikation profitiert? Die Entwicklungen im Detail richtig zu verstehen, ist aber keineswegs einfach. Auf einem auch f?r Fachfremde geeigneten Niveau zeigt die aktualisierte 3. Auflage dieses Bestsellers, wie Sprach-, Video- und Multimediainformationen gleichzeitig ?ber die Datenautobahn geleitet und verteilt werden. Aufschlussreich sind auch die historischen Ausf?hrungen und Ausblicke in die Zukunft. Schwerpunkte bilden drahtlose Technologien, Satellitenkommunikation, digitale Netze, Video- und Bild?bertragungen sowie ATM, SONET, Breitband-ISDN, UMTS, Glasfasernetze und mehr....

Biographie:
JOHN G. NELLIST led the development and implementation of fiber optic technology into the British Columbia telephone network as General Transmission Engineering Manager at Telus (formerly BC Telecom). He was appointed overall coordinator for the first field trial of a fiber optic transmission system in 1978 and presented one of the first papers on an operating fiber optic system in 1979 at the International Fiber Optic Conference.
With more than forty years of telecommunications experience, John Nellist has published and presented numerous technical papers and articles on the subject. Currently a consultant at Sarita Enterprises, Ltd., Nellist has also coauthored two books with Elliott M. Gilbert, Telecommunications Wiring for Commercial Buildings and Understanding Modern Telecommunications and the Information Superhighway....

Sommaire:

Introduction 1

1 The Evolution of Telecommunications 3

The Telegraph 3

The Telephone 3

Wireless Communications 4

AT&T Monopoly 4

Trans-Canada System 4

Semiconductors 5

Digital Communications 5

Satellite Communications 6

Fiber Optics 6

AT&T Break-Up 6

Telecommunications Act of 1996 8

The Meltdown 10

Conclusion 10

2 Analog Transmission 12

Conclusion 15

Review Questions for Chapter 2 15

3 Digital Transmission 17

Conclusion 19

Review Questions for Chapter 3 20

4 Basic Multiplexing Techniques 21

Brief History 21

FDM 21

TDM 22

Pulse-Code Modulation 22

Conclusion 27

Review Questions for Chapter 4 27

5 Switching Hierarchy 28

Brief History '. 28

Divestiture 30

Conclusion 32

Review Questions for Chapter 5 32

6 North American Digital Hierarchies 34

Conclusion 37

Review Questions for Chapter 6 37

7 Transmission 38

Transmission Level 39

Via Net Loss (VNL) 40

All-Digital Network 40

Echo Suppressors and Echo Cancellers 43

Split Echo Suppressor 44

Full Echo Suppressor 45

Digital Echo Canceller 45

Conclusion 46

Review Questions for Chapter 7 47

8 The Local Subscriber Loop 48

Brief History 48

The Local Loop 48

Digital Subscriber Carrier Systems 50

Asymmetric Digital Subscriber Lines 52

Conclusion 54

Review Questions for Chapter 8 55

9 Microwave Radio 56

Brief History 56

Digital Radio 56

Design Considerations 58

SONET Radio 60

Conclusion 61

Review Questions for Chapter 9 61

10 Satellite Communications 63

Brief History 63

Geostationary (GEO) Satellites 65

Parking Slots 66

Transponders 67

The Footprint 68

Time Delay 68

Global Positioning System 70

MEO and LEO Satellites 71

Direct-to-Home Satellite System 75

Satellite Operators 75

Conclusion 76

Review Questions for Chapter 10 76

11 Switching Systems 78

The Strowger Switch 78

Panel Switching Syste 79

Crossbar Switch 79

The First Electronic Switch 80

The Digital Switch 81

The Optical Switch 84

Optical Switches with Electrical Cores 85

All-Optical Switches 85

Conclusion 90

Review Questions for Chapter 11 90

12 Private Branch Exchange 92

Brief History 92

Analog PBX 92

Digital PBX 93

Conclusion 95

Review Questions for Chapter 12 96

13 Traffic Considerations 97

Brief History 97

CCS 97

Grade of Service 98

Internet Congestion 99

Conclusion 101

Review Questions for Chapter 13 101

14 Video Transmission 102

Brief History 102

Video Compression 102

Switched Data Services 103

Video Codecs 103

Videophone 104

Multimedia 105

Conclusion 107

Review Questions for Chapter 14 108

15 Wireless 109

Brief History 109

Cellular Telephone Service 109

The Mobile Unit 111

Personal Communications Services (PCS) 113

The Standards 114

The Future 115

Conclusion 117

Review Questions for Chapter 15 119

16 The Computer 120

Brief History 120

Digital Computers 120

Microprocessors 123

Hard Drive 123

End of an Era 125

Internet Appliances 125

The Evolution of the Silicon Chip 127

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