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CWNA®: Certified Wireless Network Administrator Official Study Guide
book

CWNA®: Certified Wireless Network Administrator Official Study Guide

by David D. Coleman, David A. Westcott
April 2009
Intermediate to advanced content levelIntermediate to advanced
765 pages
19h 26m
English
Sybex
Content preview from CWNA®: Certified Wireless Network Administrator Official Study Guide

Chapter 2. Radio Frequency Fundamentals

IN THIS CHAPTER, YOU WILL LEARN ABOUT THE FOLLOWING:

  • Definition of radio frequency signal

  • Radio frequency characteristics

    • Wavelength

    • Frequency

    • Amplitude

    • Phase

  • Radio frequency behaviors

    • Wave propagation

    • Absorption

    • Reflection

    • Scattering

    • Refraction

    • Diffraction

    • Loss (attenuation)

    • Free space path loss

    • Multipath

    • Gain (amplification)

Radio Frequency Fundamentals

To fully understand the 802.11 technology, you need to have a clear concept of how wireless works at the first layer of the OSI model, and at the heart of the Physical layer is radio frequency (RF) communications.

In a wired LAN, the signal is confined neatly inside the wire, and the resulting behaviors ...

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Publisher Resources

ISBN: 9780470438909Purchase book