Re: [SOCALWUG] Parkervision cards

[Jim Thompson]

Thats my point.   MIMO requires changes at both ends to "improve" 
things.

Anything else is constrained by the standards and receiver design.
Maybe they use receive combining when they can't run MIMO, but even 
here, they'll have issues, and
they make no claim of doing so.

There is no "MIMO" when only one end is MIMO.
On Nov 9, 2004, at 10:59 AM, Shawn Rogers wrote:
Couldn't say for sure, I'm not that technical.  I know that is Airgo's 
claim, and some tests we did with a Belkin MIMO router showed improved 
range and throughput.  My guess is the MIMO technonology gives it 
better sensitivity and is better able to handle multipath.

You can read some of their white papers here:
http://www.airgonetworks.com/product_casestudies.html

-----Original Message-----
From: Jim Thompson [mailto:[EMAIL PROTECTED]
Sent: Tuesday, November 09, 2004 10:33 AM
To: [EMAIL PROTECTED]
Subject: Re: [SOCALWUG] Parkervision cards
how?
On Nov 9, 2004, at 7:45 AM, Shawn Rogers wrote:
Actually, at least with Airgo's MIMO technology
(Belkin/SOHOWare), a
MIMO PCMCIA card will get better range than a standard 802.11g card
when connecting to a standard 802.11g AP.  Same when using
a MIMO AP
with a standard card vs a standard AP with a standard card.
-----Original Message-----
From: Jim Thompson [mailto:[EMAIL PROTECTED]
Sent: Monday, November 08, 2004 5:39 PM
To: [EMAIL PROTECTED]
Subject: Re: [SOCALWUG] Parkervision cards
On Nov 8, 2004, at 3:06 PM, Jerry Roy wrote:
Humphrey,
This is the best card I have in my whole pile. Wouldn't
trade it for
anything else.
It blew me away. You have to combine with their AP/Router
to really see
what it can do. Impressive.
Of course you do.   If the card sends MIMO to an ordinary
AP, the AP
will only 'see' (hear?) garbage, and visa versa.
Now then, tell us how you get 3X range in a LOS
environment, and ...
"3X compared to what, and in what type of environment, and at
what throughput/rate?"
Its MIMO, not Magic.
Jim
Jerry
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of Humphrey Cheung
Sent: Monday, November 08, 2004 11:01 AM
To: [EMAIL PROTECTED]
Subject: [SOCALWUG] Parkervision cards
Hello,
Anyone have experience with the Parkervision wifi cards?
They claim no
deadspots in your house, etc etc.
We thought it was voodoo, so we asked for a review unit... I'll be
damned I
get triple the range.  I'll try a wardrive today with the card.
Humphrey Cheung
Editor - Tomshardware

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