Re: [mpls-linux-general] Problem with CPU overload in older PCs

[lucapilosu\@libero\.it <luc...@li...>]

802.11a channels (in 5 GHz band) are supposed to be non-overlapping, but with a spectrum analyzer I saw that my board's channels spectrum is not very sharp, but they have some tails that partially overlap with the "neighbours".


---------- Initial Header -----------

>From      : "Adrian Popa" adr...@gm...
To          : "luc...@li..." luc...@li...
Cc          : "mpls-linux-general" mpl...@li...
Date      : Tue, 20 May 2008 18:35:02 +0300
Subject : Re: [mpls-linux-general] Problem with CPU overload in older PCs







> [offtopic]
> Aren't 802.11 channels supposed to overlap?
> 
> Quote from wikipedia:
> http://en.wikipedia.org/wiki/IEEE_802.11#Channels_and_international_compatibility
> 
> 802.11 divides each of the above-described bands into channels, analogously
> to how radio and TV broadcast bands are carved up but with greater channel
> width and overlap. For example the 2.4000-2.4835 GHz band is divided into 13
> channels each of width 22 MHz but spaced only 5 MHz apart, with channel 1
> centered on 2412 MHz and 13 on 2472, to which Japan adds a 14th channel 12
> MHz above channel 13.
> 
> True, this only applies to 2.4GHz bandwidth, not to 5GHz used by 802.11a...
> [/offtopic]
> 
> On Mon, May 19, 2008 at 4:26 PM, luc...@li... <luc...@li...>
> wrote:
> 
> > Solved!
> > My problem was caused by 2 WiFi channels that were too close to each
> > other...(don't ask me why two 802.11a channels are overlapping!!).
> > Thanks a lot all the same.
> > Luca
> >
> >
>