Fwd: Re: can somebody explains OFDM in FreeBSD?

Etienne Robillard erob at gthcfoundation.org
Sun Mar 6 15:38:55 UTC 2011


my best bet is that VLF/ELF frequencies are using FFT (Fast Fourier
Transform) algorithm to increase compression ratio of WLAN devices
operating with OFDM-enabled hardware. If that is true then not all WLAN
devices
can do OFDM thus explaining why you could use 802.11g without it...


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Date: 	Sun, 06 Mar 2011 16:33:23 +0100
From: 	Tobias Blersch <abitos at abitos.org>
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Hi,

your post mentioned ELF/VLF radiation, thats electromagnetic waves the
frequency range below 30kHz.

How should a modulation scheme (OFDM) used in the 2.4/5GHz range be
related to radiation in such a low frequency band?


Tobias




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