xii
CONTENTS
9.3.5
Multiple Access to a Communication Satellite
220
9.3.6
Earth Station Link Engineering
223
9.3.7
Digital Communication by Satellite
228
9.3.8
Very-Small-Aperture Terminal (VSAT) Networks
229
9.4
Fiber-Optic Communication Links
231
9.4.1
Applications
231
9.4.2
Introduction to Optical Fiber as a Transmission
Medium
232
9.4.3
Types of Optical Fiber
234
9.4.4
Splices and Connectors
234
9.4.5
Light Sources
236
9.4.6
Light Detectors
237
9.4.7
Optical Fiber Amplifiers
239
9.4.8
Wavelength Division Multiplexing
240
9.4.9
Fiber-Optic Link Design
241
9.5
Coaxial Cable Transmission Systems
244
9.5.1
Introduction
244
9.5.2
Description
244
9.5.3
Cable Characteristics
245
9.6
Transmission Media Summary
246
Review Exercises
247
References
248
Chapter 10
Data Communications
251
10.1
Chapter Objective
251
10.2
The Bit--A Review
251
10.3
Removing Ambiguity: Binary Convention
252
10.4
Coding
252
10.5
Errors in Data Transmission
254
10.5.1
Introduction
254
10.5.2
Nature of Errors
255
10.5.3
Error Detection and Error Correction
255
10.6
dc Nature of Data Transmission
258
10.6.1
dc Loops
258
10.6.2
Neutral and Polar dc Transmission Systems
258
10.7
Binary Transmission and the Concept of Time
259
10.7.1
Introduction
259
10.7.2
Asynchronous and Synchronous Transmission
260
10.7.3
Timing
262
10.7.4
Bits, Bauds, and Symbols
263
10.7.5
Digital Data Waveforms
264
10.8
Data Interface: The Physical Layer
265
10.9
Digital Transmission on an Analog Channel
267
10.9.1
Introduction
267
10.9.2
ModulationDemodulation Schemes
267
10.9.3
Critical Impairments to the Transmission of
Data
268
10.9.4
Channel Capacity
272
Summary :
xii CONTENTS 9.3.5 Multiple Access to a Communication Satellite 220 9.3.6 Earth Station Link Engineering 223 9.3.7 Digital Communication by Satellite 228 9.3.8 Very-Small-Aperture Terminal (VSAT) Networks 229 9.4 Fiber-Optic Communication Links 231 9.4.1 Applications 231 9.4.2 Introduction to Optical Fiber as a Transmission Medium 232 9.4.3 Types of Optical Fiber 234 9.4.4 Splices and Connectors 234 9.4.5 Light Sources 236 9.4.6 Light Detectors 237 9.4.7 Optical Fiber Amplifiers 239 9.4.8 Wavelength Division Multiplexing 240 9.4.9 Fiber-Optic Link Design 241 9.5 Coaxial Cable Transmission Systems 244 9.5.1 Introduction 244 9.5.2 Description 244 9.5.3 Cable Characteristics 245 9.6 Transmission Media Summary 246 Review Exercises 247 References 248 Chapter 10 Data Communications 251 10.1 Chapter Objective 251 10.2 The Bit--A Review 251 10.3 Removing Ambiguity: Binary Convention 252 10.4 Coding 252 10.5 Errors in Data Transmission 254 10.5.1 Introduction 254 10.5.2 Nature of Errors 255 10.5.3 Error Detection and Error Correction 255 10.6 dc Nature of Data Transmission 258 10.6.1 dc Loops 258 10.6.2 Neutral and Polar dc Transmission Systems 258 10.7 Binary Transmission and the Concept of Time 259 10.7.1 Introduction 259 10.7.2 Asynchronous and Synchronous Transmission 260 10.7.3 Timing 262 10.7.4 Bits, Bauds, and Symbols 263 10.7.5 Digital Data Waveforms 264 10.8 Data Interface: The Physical Layer 265 10.9 Digital Transmission on an Analog Channel 267 10.9.1 Introduction 267 10.9.2 ModulationDemodulation Schemes 267 10.9.3 Critical Impairments to the Transmission of Data 268 10.9.4 Channel Capacity 272
Tags :
data,introduction,communication,digital,fiber,267,258,244,251,optical,binary,259,chapter