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Chapter Summary

RF and light signals are the heart of wireless networks. They offer a means of transmitting information invisibly through air. Interference offers the most critical form of transmission impairment, requiring careful planning when deploying a wireless network. The various modulation techniques?FSK, PSK, or QAM? combine with spread spectrum or OFDM to realize a transceiver, which is a critical element of the wireless NIC.



    		Wireless Networks first-step
    		About the Author
    		About the Technical Reviewers
    		Acknowledgments
    		Introduction
    		Chapter 1. The Wireless World: An Introduction to Concepts
    		Chapter 2. Wireless System Architecture: How Wireless Works
    		Chapter 3. Radio Frequency and Light Signal Fundamentals: The Invisible Medium
    		Wireless Transceivers
    		Understanding RF Signals
    		Understanding Light Signals
    		Modulation: Preparing Signals for Propagation
    		Chapter Summary
    		Chapter Review Questions
    		Chapter 4. Wireless PANs: Networks for Small Places
    		Chapter 5. Wireless LANs: Networks for Buildings and Campuses
    		Chapter 6. Wireless MANs: Networks for Connecting Buildings and Remote Areas
    		Chapter 7. Wireless WANs: Networks for Worldwide Connections
    		Chapter 8. Wireless Network Security: Protecting Information Resources
    		Appendix A. Answers to Chapter Review Questions
    		Glossary