Hey guys, I am building an ad-hoc test bed using the
Cisco LMC352 cards.
Here I am simulating mobility using a switch and
basically just switching between the antennas.
The final aim is to put this on the web so people
could test their ad-hoc protocols. I am scaling the
system down to a table using attenuators.
Now the problem I am facing is a sort of "capture
For example say i have 50dB attenuation in one card
and 30 on the other. now the cards go out off range at
about 82 inches
(this is using pretty bad lossy hand made antenns--
basically a lossy environment is what I am aiming
Now when I bring the antennas real close then they
start to talk to each other. and when i start pulling
them apart again they seem to go a lot further than
the 82 inches.
I thought this was due to hysterisis and I fixed data
rates at 1Mbps. But the problem still remained.
Now I am thinking there might be two threshold levels
either in 802.11 specs or on the Cisco cards.
Can someone please share their thoughts on this
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