Re: 10 Mbit/s problem in your network

[joel jaeggli <joelja () bogus com>]

On 2/17/13 12:18 PM, Jay Ashworth wrote:
> ----- Original Message -----
> > From: "Owen DeLong" <owen () delong com>
> > I think by A you actually mean 5Ghz N. A doesn't do much better than G, though
> > you still have the advantage of wider channels and less frequency congestion
> > with other uses.
> No, my ThinkPad doesn't *do* N, 5GHz or otherwise.  Neither does my Sprint
> EVO, nor, as near as I can tell, the Galaxy S4 I'm going to replace it
> with this year (though on that one, I'm a tad less certain).
>
> I'd forgotten that N was dual band, though, yes.  I can't say I've ever
> needed the extra bandwidth N provides, personally, though certainly the
> hotels we've been discussing might need more to share around.
entirely orthonal to the frequency band used spatial division 
multipluxing as used by 802.11n is generally going to increase the SNR.

so what you get out of A/N is:

* more non-overlapping bands and therefore a much easier map coloring 
problem)
* greater attentuation, which implies more limited range, but also less 
interferance.
* with N-mimo higher SNR if you have >= 2 antennas

All of those things make the 5Ghz band a more attractive alternative for 
lots of applications. given that it's 5Ghz it also requires more power, 
which is a problem for cellphones, but not so much for tablets and laptops.
> Cheers,
> -- jra