Wireless Internet and Mobile Computing

This book describes the technologies involved in all aspects of a large networking system and how the various devices can interact and communicate with each other. Using a bottom up approach the authors demonstrate how it is feasible, for instance, for a cellular device user to communicate, via the all-purpose TCP/IP protocols, with a wireless notebook computer user, traversing all the way through a base station in a cellular wireless network (e.g., GSM, CDMA), a public switched network (PSTN), the Internet, an intranet, a local area network (LAN), and a wireless LAN access point. The information bits, in travelling through this long path, are processed by numerous disparate communication technologies. The authors also describe the technologies involved in infrastructure less wireless networks.

Auteur
Yu-Kwong Ricky Kwok, PhD, is Associate Professor in the Department of Electrical and Computer Engineering at Colorado State University and is a Senior IEEE Member. Before joining CSU in August 2007, he was associate professor in the Department of Electrical and Electronic Engineering at the University of Hong Kong. Vincent K.N. Lau, PhD, is Associate Professor in the Department of Electrical Engineering at the Hong Kong University of Science and Technology and is a Senior IEEE Member. Kwok and Lau are also the authors of Channel-Adaptive Technologies and Cross-Layer Designs for Wireless Systems with Multiple Antennas (Wiley).

Texte du rabat
Understanding the cornerstone of an efficient communications network Mobility is defining the future of computing, and in a resource-limited wireless environment, interoperability and performance present a major challenge that has baffled researchers and engineers for years. Now, Wireless Internet and Mobile Computing is the first book to tackle this issue with a thorough examination of how these distinctive technologies can work together, through various adaptation methods, to maintain an effective communications network. The authors' "bottom up" approach cuts through all protocol stacks in a communication system to describe how application needs affect the underlying physical layer and network layer designs, and explains how the various devices in a large networking system can communicate with each other.

Divided into six parts, the book explores:

• Essentials of Wireless Communications

• Cellular Wireless Technologies

• Short-Range Wireless Technologies

• Protocol Adaptations for Wireless Networking

• Wireless Resources Management

• Mobile Computing Application Issues

Throughout the book, practical, real-life case studies serve as motivating examples to help you gain an in-depth understanding of the technologies being discussed. Whether you're a student, researcher, or practitioner in the field, this is the only book that covers the scope and depth of this fundamental topic.

Contenu
Preface. Acknowledgments.

Acronyms.

PART I. ESSENTIALS OF WIRELESS COMMUNICATIONS.

1. The Mobile Radio Propagation Channel.

1.1 Introduction.

1.2 Large Scale Path-loss.

1.3 Shadowing Effects.

1.4 Small Scale Multipath Fading Effects.

1.4.1 Flat Fading vs Frequency Selective Fading.

1.4.2 Fast Fading vs Slow Fading.

1.5 Practical Considerations.

1.6 Summary.

Problems.

2. Modulation Techniques.

2.1 Introduction.

2.2 Signal Space and Geometric Representation of Signals.

2.3 Modulation Design and Signal Constellations.

2.4 Demodulation Design and Optimal Detection in AWGN Channels.

2.5 Performance and Tradeoffs.

2.6 Practical Illustrations.

2.7 Summary.

Problems.

3. Multiuser Communications.

3.1 Introduction.

3.2 Information Theoretical Overview of Multi-user communications.

3.3 Orthogonal Resource Partition.

3.4 Non-Orthogonal Resource Partitioning.

3.5 Spectral Efficiency and Performance Issues.

3.6 Practical Illustrations of GSM, CDMA and Wireless LAN.

3.7 Summary.

Problems.

4. Diversity Techniques.

4.1 Introduction.

4.2 Effects of Flat Fading on BER Performance.

4.3 Effects of Frequency Selective Fading on BER Performance.

4.4 Diversity: A Key Technique to Combat Flat Fading Channels.

4.5 Equalization*.

4.6 Practical Illustration: RAKE Receiver.

4.7 Summary.

Problems.

PART II. CELLULAR WIRELESS TECHNOLOGIES.

5. Overview and Evolution of Cellular Technologies.

5.1 Introduction.

5.2 Evolution of Cellular Systems.

5.3 Technical Challenges to Realize 3G Services.

5.4 Summary.

Problems.

6. CDMA (IS-95).

6.1 Introduction.

6.2 System Architecture of IS95.

6.3 Physical Layer and Physical Channels.

6.4 Call Processing.

6.5 Power Control.

6.6 Soft Handover.

6.7 Summary.

Problems.

7. GSM.

7.1 Introduction.

7.2 GSM System Architecture.

7.3 GPRS System Architecture.

7.4 Radio Interface.

7.5 Core Network Interface and Services.

7.6 Summary.

Problems.

8. Wideband CDMA and Beyond.

8.1 Introduction.

8.2 UMTS Architecture.

8.3 Packet Switched Connections in UMTS (Rel 99).

8.4 Packet Scheduling in HSDPA (Rel 5).

8.5 Summary.

Problems.

PART III. SHORT-RANGE WIRELESS TECHNOLOGIES.

9. IEEE 802.11x WLAN Standards.

9.1 Introduction.

9.2 Design Goals.

9.3 IEEE 802 Architecture.

9.4 IEEE 802.11 MAC Layer.

9.5 IEEE 802.11 Physical Layers.

9.6 IEEE 802.11e for QoS Provisioning.

9.7 Advanced Developments.

9.8 Practical Illustration: Home Network.

9.9 Summary.

Problems.

10. Bluetooth WPAN.

10.1 Introduction.

10.2 Design Goals.

10.3 Bluetooth Protocol Stack.

10.4 Bluetooth Physical and MAC Layers.

10.5 Piconets and Scatternets.

10.6 Performance Issues.

10.7 Practical Illustration: Sensor Network.

10.8 Summary.

Problems.

11. Coexistence Issues.

11.1 Introduction.

11.2 The ISM Band Spectrum.

11.3 Packet Collision.

11.4 Possible Solutions.

11.5 IEEE 802.15 TG2. 11.6 Interference Source Oriented Adaptive Frequency Hopping....