[181069] in North American Network Operators' Group

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Re: 2.4Ghz 40Mhz 802.11n wifi and Apple Macbook

daemon@ATHENA.MIT.EDU (Brielle Bruns)
Mon Jun 15 13:39:56 2015

X-Original-To: nanog@nanog.org
To: nanog@nanog.org
From: Brielle Bruns <bruns@2mbit.com>
Date: Mon, 15 Jun 2015 11:39:48 -0600
In-Reply-To: <014afcc2287b3a5d4dd0e19db49c3be8.squirrel@mail.scarynet.org>
Errors-To: nanog-bounces@nanog.org

On 6/14/15 9:56 PM, Alexander Maassen wrote:
> Shoot me if i'm wrong, but doesn't a mac prefer MIMO in order to work
> correctly?

You still get a nice performance boost with 802.11b/g/n in 2.4 range 
even at 20mhz, but if you go to 40mhz, you'll be splattering all over 
the entire 2.4 band.

This is why all of the pre-N performance enhancements for G were 
troublemakers if you had multiple wireless networks in the same area. 
You turn it on, and one of two things happen - you either wreck 
performance of everyone else on that band, or everyone else wrecks your 
performance.

-- 
Brielle Bruns
The Summit Open Source Development Group
http://www.sosdg.org    /     http://www.ahbl.org

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