Re: MIMO needs that router & card have it to work?.
- From: Jeff Liebermann <jeffl@xxxxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 16 May 2006 09:03:03 -0700
"xavi" <xavi11esNOSPAM@xxxxxxxx> hath wroth:
If I buy a MIMO pcmcia card and my router don't have MIMO . Do I notice a
improvement over normal wirelles card or not?
Probably no improvement. In theory, a MIMO PCMCIA card has the same
multiple signal handling benifits of a MIMO wireless access point.
Internally, the PCMCIA MIMO design is almost identical to that of the
MIMO access point.
In reality, the lack of sufficient antenna seperation makes a MIMO
PCMCIA card a marginal proposition. If the antennas resembled those
on the MIMO access point, there would certainly be a benifit, but not
with the typical tiny and squashed together antennas found on PCMCIA
cards. However, if you're working in a highly reflective environment,
the MIMO PCMCIA card will probably offer some improvement in
reflection immunity.
To illustrate the problem, the Linksys WMP54GX PCI card has 3 external
antenna connections, and a truely bizarre looking antenna farm. The
antenna is not pictured on the Linksys site, but if you search Froogle
for WMP54GX, you'll see some photos. That's what your PCMCIA card
antenna farm will need to look like in order to derive some benifits
from MIMO technology.
--
Jeff Liebermann jeffl@xxxxxxxxxxxxxxxxxxxxxx
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
.
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