can somebody explains OFDM in FreeBSD?

[Bruce Cran]

On Mon, 7 Mar 2011 05:00:42 +0800
Adrian Chadd <adrian at freebsd.org> wrote:

> FreeBSD doesn't implement OFDM in the kernel.
> 
> The various chipsets implement OFDM, not FreeBSD.
> 
> There's no "software" OFDM. The 802.11 chipsets out there take care
> of it, not FreeBSD.

[moved to freebsd-chat]

OFDM doesn't exist in the digital domain. The furthest you can go in
software is to use the I-Q pairs that represent the modulated (baseband)
data - that is, QPSK, BPSK, QAM etc. If you have a card that makes I-Q
data accessible (and I suspect most wireless cards don't) then you can
demodulate it using general-purpose software such as Matlab or a DSP
library.

-- 
Bruce Cran