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This text explains the general principles of how wireless systems work, how mobility is supported, what the underlying infrastructure is and what interactions are needed among different functional components. Designed as a textbook appropriate for undergraduate or graduate courses in Computer Science (CS), Computer Engineering (CE), and Electrical Engineering (EE), Introduction to Wireless and Mobile Systems third edition focuses on qualitative descriptions and the realistic explanations of relationships between wireless systems and performance parameters. Rather than offering a thorough history behind the development of wireless technologies or an exhaustive list of work being carried out, the authors help CS, CE, and EE students learn this exciting technology through relevant examples such as understanding how a cell phone starts working as soon as they get out of an airplane. Key Features 1.Experiments have been added to the end of each chapter for exploring the use of hardware and/or simulators. 2.Challenging open ended experimental questions have been added into many chapters. 3.Expanded coverage of Sensor Networks and associated issues. 4.New discussions on Mobile IP, Multicasting in ad hoc networks, WiMAX, Wireless Mesh Networks, and Cognitive Radio, Femtocells, and various Attacks in wireless networks. 5.Expanded coverage of IEEE 802.11 protocols and its variants. 6.Provides a clear understanding of how the mobility of cell phones is supported. 7.Includes only the necessary mathematical formulations so students can appreciate their usefulness in numerous wireless and mobile system applications without being overwhelmed by mathematical detail. 8.Offers detailed discussions on how ad hoc and sensor networks are finding increasing use in military and commercial applications. 9.Discusses how the introduction of the Bluetooth standard has revolutionized the field with easy replacement of connectors. 10.Covers recent advances in the last chapter with an emphasis on the research work being carried out in wireless and mobile computing areas. 11.Encourages students to use one of the simulators (ns-2, OPNET, or other stable simulators) to get a feel for the overall system complexity. 12.Offers a list of class-tested laboratory experiments that could be used for projects in various chapters. Table of Contents 1. Introduction 2. Probability, Statistics, And Traffic Theories 3. Mobile Radio Propagation 4. Channel Coding And Error Control 5. Cellular Concept.Introduction 6. Multiple Radio Access 7. Multiple Division Techniques For Traffic Channels 8. Traffic Channel Allocation 9. Network Protocols 10. Mobile Communication Systems 11. Existing Wireless Systems 12. Satellite Systems 13. Ad Hoc Networks 14. Sensor Networks 15. Wireless Lans, Mans And Pans 16. Recent Advances Appendix A - Erlang B Table Appendix B - Simulation Projects Index