RE: ANNOUNCE: Linux UWB and Wireless USB project

From: Alan Cox
Date: Mon Jun 05 2006 - 18:10:20 EST


Ar Llu, 2006-06-05 am 13:31 -0700, ysgrifennodd Perez-Gonzalez, Inaky:
> For what I know (and I could be wrong) max is around -40dBm/MHz
> in the US. I am no expert in the nitty-gritty radio details, but
> I've been told that is 3000 times less emissions than a common
> cellphone, around .1 uW? [this is where my knowledge about radio
> *really* fades].

Life is never that simple. The total emissions of UWB are pretty low but
their spread across the wide frequency range makes them incredibly low
on any frequency - so very unlikely to interfere.

The total emissions across the set of frequencies as a sum (with
emphasis on some frequency ranges such as 2.4-2.5GHz) apparently matters
much more than the emissions at one frequency for things like human
exposure.

Alan

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/