Wireless density and performance test

I am trying to understand what the diferance between this and a normal
site wireless survey is but I can find no referance to a density and
performance test on the net anywhere.

I think it refers to software .. maybe one of the Airmagnet products.

Any help appreciated !!

Drop the ZZZ to reply

Cheers ...

On Sun, 22 Aug 2004 22:26:02 +0100, z400d3 <(E-Mail Removed)>
wrote:

>I am trying to understand what the diferance between this and a normal
>site wireless survey is but I can find no referance to a density and
>performance test on the net anywhere.

A good clue as to whether you're going to find any kind of
measurements is.... if there is no obvious units of measure, there's
probably no way to measure it.

http://ceng.usc.edu/~bkrishna/resear...ityChapter.pdf

Wireless density is just one of the parameters used to determine the
threshold at which an excessive number of wireless devices create so
much garbage, interference, pollution, collisions, retransmission, and
crap, that communications is no longer possible. This is more
important in high density wireless sensor networks, Zigbee, and
802.11a/b/g mesh networks. The problem with all collision avoidance,
and collision detection schemes is that they have a rather abrupt
threshold at which data moves along merrily, and where everything
comes to grinding halt. As these type of networks tend to generate
their own interference, the ability to estimate the maximum density of
devices is rather important. Obviously it's affected by modulation,
data encoding, power, sensitivity, and just about everything else.

Performance tests are easy. You just measure the thruput at a fixed
BER (bit error rate). Most 802.11a/b/g devices use a reference BER of
10E-5. However, the trend is toward using 10E-6 which is the standard
in broadcasting and telco wireless datacomm.

So, what are you trying to accomplish or is this your homework
assignment?

>I think it refers to software .. maybe one of the Airmagnet products.
>Any help appreciated !!
>Drop the ZZZ to reply

ZZZZZZZZZZZZzzzzzzzzzzzzzzzz..... wake me up when you're ready. If
you can post to usenet, you can read the answers on usenet. Nobody
else learns from private email. Besides, if it's email, I consider it
consulting and usually charge $$$ for the effort.



--
Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 AE6KS 831-336-2558