802.11 Basics and RF Fundamentals

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Attached is a presentation from Airheads Vegas 2012 and Airheads Bangkok 2012, summarizing 802.11 basics. An earlier version was also presented at Airheads Dallas 2011.  

 

For more details, take a look at the 4 part online video series on RF fundamentals below. 

Components: Transmitter, Antenna, Receiver, Isotropic Radiator, Intentional Radiator, EIRP

Characteristics: Amplitude, Frequency, Wavelength, Polarization

Behavior: Wave Propagation, RF Power, Path Loss, dBm vs. mW, Absorption, Reflection, Scattering, Diffraction, Multipath, In/Out Phase, Attenuation, Amplification

802.11 Overview: 2.4 and 5GHz channels, 802.11h (DFS & TPC), 11a/b/g vs. 11n, MIMO

 

 
 

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‎08-12-2013 09:19 AM
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Back to basics: DSS with 802.11 Prime and 802.11b by RevolutionWiFi @ NSA Podcast Show

http://nostringsattachedshow.com/2012/01/06/dsss-with-802-11-prime-and-802-11b/

 

 

Great blog entry on RF basics and more: 

 

Part 1

RF Basics

So, what types of antennas are there and what are the differences?

What blocks WiFi?

 

Part 2

Understanding RF Interference and What It Does to WiFi

Mapping Your Wireless Landscape


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