Re: [Madwifi-devel] Signal strength fluctuates in madwifi AP, when observed from a software

[Candy Y. <ca...@cs...>]

Hi,

In my experiment, I see RSSI value fluctuate 5dB. I modified the madwifi
code to report me per packet RSSI value, it reports average values normally.
In addition, there are a lot of reasons for strength changes. Mulitpath is
one of them. If you have people walking around, you will be able to see that
easily.

Another thing is that different hardware has different definition of RSSI.
802.11 does not enforce how RSSI value being represent.

hope this help,
-- 
Candy YIU
student, Computer Science
Portland State University
http://web.pdx.edu/~candy



On Thu, Jun 4, 2009 at 8:04 AM, Karthik Gopal <gop...@gm...>wrote:

> Hi,
>
> I am using one SR5 radio on a IXP4XX family board ( from gateworks GW2348).
> I use madwifi driver for the projects. Access points created at a SR5 or SR2
> radio cards, when observed, using a software (a windows XP machine having
> SR2/SR5 radio in its PCI slot, with signal strength indicator software like
> insidder, installed ), shows that the power fluctuations of my AP. But a AP
> from (DLINK product) has better constancy like a flat line in the graph.
>
> I am sure that the madwifi driver is having some problem, which makes it
> fluctuates the signal strenght of the AP.
>
> I do not know how to rectify this, as it indicated as a HAL problem. I
> welcome that if anyone can give some suggestions.
>
> --
> Regards, Karthik Gopal,
> Project Lead | MeshCity Division |
>
>
>
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