VSAT Networks / Edition 2

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Overview

VSAT Networks: Second Edition covers all the important issues involved with the installation of VSAT systems.
Since the first edition was published, the VSAT market has continued to expand steadily. VSAT technologies have advanced, prompting an increase in the take-up of VSAT services.
Offering a comprehensive introduction to the topic followed by a detailed exploration of multiple access protocols, delay analysis and system dimensioning, this edition is a highly relevant update of VSAT Networks. Written by a well respected and established member of the satellite community, it will be welcomed be academics and engineers alike.

  • Covers important issues of services, economics and regulatory aspects
  • Provides a detailed technical insight on networking and radio frequency link aspects, therefore addressing the specific features of VSAT networks at the three lower layers of the OSI Reference Layer Model for data communications
  • This timely second edition is fully updated with new figures, improvements and revised chapter on future developments

This book will appeal to students of telecommunications, electronics and computer science. Practising telecommunications engineers and technical managers involved in the planning, design and operation of VSAT networks and systems will also find this book a valuable reference source.

Ideal for wide-area distribution and corporate networking, VSAT Satellite Systems are set to become a major growth area in telecommunications. This book starts with an introduction to VSAT networks and covers topics such as network architecture, services and network traffic, regulations and economics of VSAT networks.

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Product Details

  • ISBN-13: 9780470866849
  • Publisher: Wiley
  • Publication date: 3/8/2004
  • Edition description: REV
  • Edition number: 2
  • Pages: 296
  • Product dimensions: 10.00 (w) x 7.00 (h) x 0.69 (d)

Table of Contents

Preface.

Acronyms and Abbreviations.

Notation.

1. Introduction.

1.1 VSAT network definition.

1.2 VSAT network configurations.

1.3 User terminal connectivity.

1.4 VSAT network applications and types of traffic.

1.4.1 Civilian VSAT networks.

1.4.2 Military VSAT networks.

1.5 VSAT networks: involved parties.

1.6 VSAT network options.

1.6.1 Star or mesh?

1.6.2 Data/voice/video.

1.6.3 Fixed/demand assignment.

1.6.4 Frequency bands.

1.6.5 Hub options.

1.7 VSAT network earth stations.

1.7.1 VSAT station.

1.7.2 Hub station.

1.8 Economic aspects.

1.9 Regulatory aspects.

1.9.1 Licensing.

1.9.2 Access to the space segment.

1.9.3 Local regulations.

1.10 Conclusions.

1.10.1 Advantages.

1.10.2 Drawbacks.

2. Use of satellites for VSAT networks.

2.1 Introduction.

2.1.1 The relay function.

2.1.2 Transparent and regenerative payload.

2.1.3 Coverage

2.1.4 Impact of coverage on satellite relay performance.

2.1.5 Frequency reuse.

2.2 Orbits.

2.2.1 Newton's universal law of attraction.

2.2.2 Orbital parameters.

2.3 The geostationary satellite.

2.3.1 Orbit parameters.

2.3.2 Launching the satellite.

2.3.3 Distance to the satellite.

2.3.4 Propagation delay.

2.3.5 Conjunction of the sun and the satellite.

2.3.6 Orbit perturbations.

2.3.7 Apparent satellite movement.

2.3.8 Orbit corrections.

2.3.9 Doppler effect.

2.4 Satellites for VSAT services.

3. Operational aspects.

3.1 Installation.

3.1.1 Hub.

3.1.2 VSAT.

3.1.3 Antenna pointing.

3.2 The customer's concerns.

3.2.1 Interfaces to end equipment.

3.2.2 Independence from vendor.

3.2.3 Set-up time.

3.2.4 Access to the service.

3.2.5 Flexibility.

3.2.6 Failure and disaster recovery.

3.2.7 Blocking probability.

3.2.8 Response time.

3.2.9 Link quality.

3.2.10 Availability.

3.2.11 Maintenance.

3.2.12 Hazards.

3.2.13 Cost.

4. Networking aspects.

4.1 Network functions.

4.2 Some definitions .

4.2.1 Links and connections.

4.2.2 Bit rate.

4.2.3 Protocols.

4.2.4 Delay.

4.2.5 Throughput.

4.2.6 Channel efficiency.

4.2.7 Channel utilization.

4.3 Traffic characterization.

4.3.1 Traffic forecasts.

4.3.2 Traffic measurements.

4.3.3 Traffic source modeling.

4.4 The OSI reference model for data communications.

4.4.1 The physical layer.

4.4.2 The data link layer.

4.4.3 The network layer.

4.4.4 The transport layer.

4.4.5 The upper layers (5 to 7).

4.5 Application to VSAT networks.

4.5.1 Physical and protocol configurations of a VSAT network.

4.5.2 Protocol conversion (emulation).

4.5.3 Reasons for protocol conversion.

4.6 Multiple access.

4.6.1 Basic multiple access protocols.

4.6.2 Meshed networks.

4.6.3 Star-shaped networks.

4.6.4 Fixed assignment versus demand assignment.

4.6.5 Random time division multiple access.

4.6.6 Delay analysis.

4.6.7 Conclusion.

4.7 Network design.

4.7.1 Principles.

4.7.2 Guidelines for preliminary dimensioning.

4.7.3 Example.

4.8 Conclusion.

5. Radio frequency link analysis.

5.1 Principles.

5.1.1 Thermal noise.

5.1.2 Interference noise.

5.1.3 Intermodulation noise.

5.1.4 Carrier power to noise power spectral density ratio.

5.1.5 Total noise.

5.2 Uplink analysis.

5.2.1 Power flux density at satellite distance.

5.2.2 Effective isotropic radiated power of the earth station.

5.2.3 Uplink path loss.

5.2.4 Figure of merit of satellite receiving equipment.

5.3 Downlink analysis.

5.3.1 Effective isotropic radiated power of the satellite.

5.3.2 Flux density at earth surface.

5.3.3 Downlink path loss.

5.3.4 Figure of merit of earth station receiving equipment.

5.4 Intermodulation analysis.

5.5 Interference analysis.

5.5.1 Expressions for carrier-to-interference ratio.

5.5.2 Types of interference.

5.5.3 Self-interference.

5.5.4 External interference.

5.5.5 Conclusion.

5.6 Overall link performance.

5.7 Bit error rate determination.

5.8 Power versus bandwidth exchange.

5.9 Example.

Appendix 1: Traffic source models.

Appendix 2: Automatic repeat request (ARQ) protocols.

Appendix 3: Interface protocols.

Appendix 4: Antenna parameters.

Appendix 5: Emitted and received power.

Appendix 6: Carrier amplification.

Appendix 7: VSAT products.

References.

Index.

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  • Anonymous

    Posted May 25, 2001

    VSAT Technology, Regulation & Economics

    There is indeed a dearth in books which provide a suitable background to the increasingly important satellite technology called VSAT (Very Small Aperture Satellite Terminal). It would not be an overstatement that VSATs have enabled many businesses to enjoy the benefits of private networks and break the tyranny of so-called 'National Telcos', especially in the lesser telecom-liberalised parts of the world such as Asia and Africa. The book is by a veteran of the satellite industry in Europe and reflects the author's first-hand exposure to satcoms in general and VSAT in particular. The text lacks in the area of 'IP over VSAT' which is probably the hottest application of VSAT these days, but it is a recent development and the book was published in 1995. When I entered the field of VSAT in 1996, my most prized possession was (and still is) this book by G. Maral. It would definitely be a pleasure if a revised and updated edition is published in the near future, containing more information on IP over VSAT, Ku/Ka Band VSAT, Multimedia over VSAT, etc., to name just a few. I would recommend this book to students, managers as well as regulators who wish to acquire a good working knowledge of this exciting and trend-setting technology.

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