The King is Dead, Long Live the King: 802.11n dramatically improves Wi-Fi outdoors

[David Farber <dave () farber net>]

Begin forwarded message:

From: dewayne () warpspeed com (Dewayne Hendricks)
Date: February 24, 2009 12:18:50 PM EST
To: Dewayne-Net Technology List <xyzzy () warpspeed com>
Subject: [Dewayne-Net] The King is Dead, Long Live the King: 802.11n  
dramatically improves Wi-Fi outdoors

[Note:  This item comes from friend Esme Vos.  Worth reading!  DLH]

The King is Dead, Long Live the King: 802.11n dramatically improves Wi- 
Fi outdoors
February 23, 2009 at 7:54 PM by Ken Biba
<http://www.muniwireless.com/2009/02/23/80211n-dramatically-improves-outdoor-wifi/ 
>

IEEE 802.11n is the new international standard for wireless Local Area  
Networks, incorporating new smart antenna technologies (MIMO -  
Multiple In and Multiple Out) permitting a 5x performance and 2x  
coverage improvement for WLANs. While this new technology is becoming  
the de facto standard in consumer and enterprise networks, it has not  
yet made an appearance in outdoor, metropolitan scale networks derived  
from Wi-Fi technology.

Many of these same MIMO techniques are being incorporated in both  
WiMax and in LTE for cellular networks. Sadly, neither is being  
produced in much volume and fixed WiMax networks do not incorporate  
MIMO technology.

There has been much dispute about whether the specifics of 802.11n  
designed for indoor networks would apply to outdoor networks and bring  
the economy of scale of 802.11 to outdoor applications. At Novarum, we  
tested the effects of 802.11n on outdoor performance. We found  
dramatic improvements in using indoor 802.11n technology outdoors, so  
much so that 802.11n has become, for us, the recommended baseline for  
new network deployments.

First, let’s review the key pieces of technology incorporated in  
802.11n and how it might affect outdoor performance.

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