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New Standards for Wireless LANs

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Radio Channel Characteristics<br />

• Superposition of<br />

numerous direct and<br />

reflected multipath<br />

components with<br />

different attenuation<br />

and phasing<br />

• time variant<br />

• Differentiation of fast<br />

and slow fading<br />

• Fast fading due to superposition of different phases<br />

• Slow fading is due to the change of propagation<br />

environment<br />

• Both fading types depend on the frequency<br />

A<br />

- 37 -<br />

B<br />

TZI – FB 1 – Kommunikationsnetze<br />

Andreas Könsgen – Summer Term 2011

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