Atheros card SNR vs RSSI!?!

[ginovilla]

Lonnie, and list:

I know that the atheros card support on StarOS does not report noise, as Lonnie stated, it is not supported by the Atheros Code.

I got a big question, we also have some MP11.a products from Proxim, I checked the fcc id filings for it, and it uses a Atheros card too!, so how come the MP11a has a SNR readings?!, for the radio to know the SNR, it has to know the RSSI and Noise right?

this is weird

Gino

[tony]

The Atheros cards do handle noise and in fact have quite a bit of code in the driver to do so, however there are no per-packet noise readings that can be used for per-user SNR calculations. There may be a possibility that Proxim may be using some of the global hardware readings in it's SNR stats.

[lonnie]

The cards are constantly adjusting their no signal floor of -95 dB by taking noise into account. Our quality reading is actually the SNR, it is just that actual nose is not reported. It is accounted for, just not repoprted.