Produktbild: Wireless Video Communications

Wireless Video Communications Second to Third Generation and Beyond

282,99 €

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Beschreibung

Produktdetails

Einband

Gebundene Ausgabe

Erscheinungsdatum

12.03.2001

Verlag

John Wiley & Sons

Seitenzahl

1136

Maße (L/B/H)

26,3/18,3/4,9 cm

Gewicht

1941 g

Auflage

1. Auflage

Sprache

Englisch

ISBN

978-0-7803-6032-7

Beschreibung

Produktdetails

Einband

Gebundene Ausgabe

Erscheinungsdatum

12.03.2001

Verlag

John Wiley & Sons

Seitenzahl

1136

Maße (L/B/H)

26,3/18,3/4,9 cm

Gewicht

1941 g

Auflage

1. Auflage

Sprache

Englisch

ISBN

978-0-7803-6032-7

Herstelleradresse

Libri GmbH
Europaallee 1
36244 Bad Hersfeld
DE

Email: GPSR Kontakt

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  • Produktbild: Wireless Video Communications
  • Preface xxiii

    Acknowledgments xxix

    Contributors xxxi

    I Transmission Issues 1

    1 Information Theory 3

    1.1 Issues in Information Theory 3

    1.2 Additive White Gaussian Noise Channel 7

    1.3 Information of a Source 11

    1.4 Average Information of Discrete Memoryless Sources 12

    1.5 Source Coding for a Discrete Memoryless Source 15

    1.6 Average Information of Discrete Sources Exhibiting Memory 22

    1.7 Examples 25

    1.8 Generating Model Sources 28

    1.9 Run-Length Coding for Discrete Sources Exhibiting Memory 31

    1.10 Information Transmission via Discrete Channels 34

    1.11 Capacity of Discrete Channels 49

    1.12 Shannon's Channel Coding Theorem 53

    1.13 Capacity of Continuous Channels 55

    1.14 Shannon's Message and Its Implications for Wireless Channels . . . . 62

    1.15 Summary and Conclusions 65

    2 The Propagation Environment 67

    2.1 The Cellular Concept 67

    2.2 Radio Wave Propagation 71

    2.3 Summary and Conclusions 92

    3 Convolutional Channel Coding 93

    3.1 Brief Channel Coding History 93

    3.2 Convolutional Encoding 94

    3.3 State and Trellis Transitions 96

    3.4 The Viterbi Algorithm 98

    3.5 Summary and Conclusions 106

    4 Block-Based Channel Coding 107

    4.1 Introduction 107

    4.2 Finite Fields 108

    4.3 Reed-Solomon and Bose-Chaudhuri-Hocquenghem Block Codes . . . . 114

    4.4 RS and BCH Codec Performance 156

    4.5 Summary and Conclusions 158

    5 Modulation and Transmission Techniques 161

    5.1 Modulation Issues 161

    5.2 Orthogonal Frequency Division Multiplexing 197

    5.3 Packet Reservation Multiple Access 201

    5.4 Flexible Transceiver Architecture 202

    5.5 Summary and Conclusions 204

    6 Video Traffic Modeling and Multiple Access 205

    6.1 Video Traffic Modeling 205

    6.2 Multiple Access 223

    6.3 Summary and Conclusions 243

    7 Co-Channel Interference 247

    7.1 Introduction 247

    7.2 Factors Controlling Co-Channel Interference 248

    7.3 Theoretical Signal-to-Interference Ratio 252

    7.4 Simulation Parameters 255

    7.5 Results for Multiple Interferers 258

    7.6 Results for a Single Interferer 269

    7.7 Summary and Conclusions 284

    8 Channel Allocation 287

    8.1 Introduction 287

    8.2 Overview of Channel Allocation 288

    8.3 Simulation of the Channel Allocation Algorithms 299

    8.4 Performance Comparisons 310

    8.5 Summary and Conclusions 335

    9 Second-Generation Mobile Systems 339

    9.1 The Wireless Communications Scene 339

    9.2 Global System for Mobile Communications - GSM 342

    10 CDMA Systems: Third-Generation and Beyond 365

    10.1 Introduction 365

    10.2 Basic CDMA System 366

    10.3 Third-Generation Wireless Mobile Communication Systems 392

    10.4 Summary and Conclusions 455

    II Video Systems Based on Proprietary Video Codecs 457

    11 Fractal Image Codecs 459

    11.1 Fractal Principles 459

    11.2 One-Dimensional Fractal Coding 462

    11.3 Error Sensitivity and Complexity 471

    11.4 Summary and Conclusions 473

    12 Very Low Bit-Rate DCT Codecs 475

    12.1 Video Codec Outline 475

    12.2 The Principle of Motion Compensation 477

    12.3 Transform Coding 492

    12.4 The Codec Outline 499

    12.5 Initial Intra-Prame Coding 502

    12.6 Gain-Controlled Motion Compensation 502

    12.7 The MCER Active/Passive Concept . 503

    12.8 Partial Forced Update of the Reconstructed Frame Buffers 504

    12.9 The Gain/Cost-Controlled Inter-Frame Codec 506

    12.10 The Bit-Allocation Strategy 509

    12.11Results 510

    12.12 DCT Codec Performance under Erroneous Conditions 512

    12.13 DCT-Based Low-Rate Video Transceivers 516

    12.14 System Performance 524

    12.15 Summary and Conclusions 535

    13 VQ Codecs and Multimode Video Transceivers 537

    13.1 Introduction 537

    13.2 The Codebook Design 537

    13.3 The Vector Quantizer Design 541

    13.4 Performance under Erroneous Conditions 550

    13.5 VQ-Based Low-Rate Video Transceivers 554

    13.6 System Performance 558

    13.7 Summary and Conclusions 564

    14 Low Bit-Rate Parametric Quad-Tree-Based Codecs and Multimode Videophone Transceivers 567

    14.1 Introduction 567

    14.2 Quad-Tree Decomposition 568

    14.3 Quad-Tree Intensity Match 571

    14.4 Model-Based Parametric Enhancement 576

    14.5 The Enhanced QT Codec 582

    14.6 Performance under Erroneous Conditions 583

    14.7 QT-Codec-Based Video Transceivers 586

    14.8 QT-Based Video-Transceiver Performance 591

    14.9 Summary of QT-Based Video Transceivers 595

    14.lOSummary of Low-Rate Codecs/Transceivers 595

    III High-Resolution Image Coding 601

    15 Low-Complexity Techniques 603

    15.1 Introduction and Video Formats 603

    15.2 Differential Pulse Code Modulation 608

    15.3 Block Truncation Coding 613

    15.4 Subband Coding 618

    15.5 Run-Length-Based Intra-Frame Subband Coding 630

    15.6 Summary and Conclusions 637

    16 High-Resolution DCT Coding 639

    16.1 Introduction 639

    16.2 Intra-Frame Quantizer Training 639

    16.3 Motion Compensation for High-Quality Images 644

    16.4 Inter-Frame DCT Coding 650

    16.5 The Proposed Codec 658

    16.6 Summary and Conclusions 669

    IV Video Systems Based on Standard Video Codecs 673

    17 An ARQ-Assisted H.261-Based Reconfigurable Multilevel Videophone System 675

    17.1 Introduction 675

    17.2 The H.261 Video Coding Standard 675

    17.3 Effect of Transmission Errors on the H.261 Codec 692

    17.4 A Wireless Reconfigurable Videophone System 710

    17.5 H.261-Based Wireless Videophone System Performance 721

    17.6 Summary and Conclusions 731

    18 Comparison of the H.261 and H.263 Codecs 733

    18.1 Introduction 733

    18.2 The H.263 Coding Algorithms 735

    18.3 Performance Results 757

    18.4 Summary and Conclusions 776

    19 A H.263 Videophone System for Use over Mobile Channels 777

    19.1 Introduction 777

    19.2 H.263 in a Mobile Environment 777

    19.3 Design of an Error-Resilient Reconfigurable Videophone System . . . . 781

    19.4 H.263-Based Video System Performance 790

    19.5 Transmission Feedback 806

    19.6 Summary and Conclusions 816

    20 Error Rate Based Power Control 819

    20.1 Background 819

    20.2 Power Control Algorithm 819

    20.3 Performance of the Power Control 824

    20.4 Multimode Performance 832

    20.5 Average Transmission Power 834

    20.6 Optimization of Power Control Parameters 838

    20.7 Power Control Performance at Various Speeds 845

    20.8 Multiple Interferers 855

    20.9 Summary and Conclusions 859

    21 Adaptive Single-Carrier, Multicarrier, and CDMA-based Video Systems 861

    21.1 Turbo-equalised H.263-based videophony for GSM/GPRS 861

    21.2 Adaptive QAM-based Wireless Videophony 875

    21.3 UMTS-like Burst-by-burst Adaptive CDMA Videophony 894

    21.4 H.263/OFDM-Based Video Systems for Frequency-Selective Wireless Networks 908

    21.5 Adaptive Turbo-coded OFDM-Based Videotelephony 927

    21.6 Digital Terrestrial Video Broadcasting for Mobile Receivers 950

    21.7 Satellite-Based Video Broadcasting 996

    21.8 Summary and Conclusions 1018

    21.9 Wireless Video System Design Principles 1020

    Glossary 1023

    Bibliography 1033

    Subject Index 1065

    Author Index 1081

    About the Authors 1093