ORBIT-USER: Limiting Connectivity

[Ivan Seskar]

Hi everybody,

Sorry for the late reply regarding the noise generator - we were hoping
that the replacement cable for one of the four interference injection
antennas would arrive by now but it didn't (it is a custom cut piece of
low loss LMR-600 cable for those of you who are interested in such
details). Since quite a few people asked for it, we are going to release
the interference injection subsystem with only three antennas which
unfortunately means that we want be able to fully calibrate the setup
until that fourth cable arrives. Our 120 custom made noise injection
boards are in manufacturing at the moment with the expected delivery
date before the end of the month; however we will need quite some time
after that to get to the point where we have everything installed and
catalogue of topologies available (you will be of course more than
welcome to experiment with partially configured setup and come up with
your own topologies even before we roll it out officially). 

Ivan.

PS: We also desperately need to update the documentation on
interference/noise injection since the small grid is not there any more.
 

-----Original Message-----
From: owner-orbit-user at winlab.rutgers.edu
[mailto:owner-orbit-user at winlab.rutgers.edu] On Behalf Of
chris at orderonenetworks.com
Sent: Tuesday, August 08, 2006 9:28 AM
To: orbit-user at orbit-lab.org
Subject: ORBIT-USER: Limiting Connectivity

Hello,

I'd like to create a circumstance in the 400 node grid where only
adjacent nodes are able to hear each other. I can deal with some spill
over, but its important for my experiment that this is limited.

I'm assuming the answer is a combination of noise generation and receive
sensitivity adjustment. I'd like to avoid doing pure neighbor MAC
filtering to avoid channel congestion.

Has anyone done this before? or know of where I can find the best way to
make this happen?

Thanks for your help,
Chris