[Mesh] Apollo-NG - Argus

[Mitar]

Hi!

Thanks, bounced:

https://apollo.open-resource.org/lab:argus?&#comment_1646179761053cdf8cf0b867543cb64d


Mitar

> So the summary, and this can be bounced to them:
> 
> The AR9330 is a 1x1, single radio chain device. It's not doing MIMO.
> It's doing classic fast diversity and antenna signal mixing, rather
> than MIMO.
> 
> That is, there's an antenna switch that selects antenna A or antenna
> B. The software can program which one to default to, and if it has
> time it'll try sampling the preamble signal level on both antenna A
> and antenna B before choosing which is "better".
> 
> The slow diversity (slowdiv / antcomb in the ath9k source) is where
> the LNA inputs can be mixed in certain ways before being sent to the
> baseband for RX processing. The configurations (from memory) are A, B,
> A+B, A-B. It's not doing MIMO - there's only one radio chain and the
> mixing is done via a real bonafide analog mixer. (MIMO here is where
> there's much more signal analysis and correlation done in the digital
> domain.)
> 
> You can actually do both on the AR9330 if you know what you're doing
> and if the board is wired up the right way.
> 
> Yes, if someone pops up on the ath9k-devel mailing list and asks, I'll
> do my best to make it happen.
> 
> 
> 
> -a
> 

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