ORBIT-USER: Reg Noise injection problem

Shanmuga Sundaram shanmuga at winlab.rutgers.edu
Thu Feb 1 03:14:45 EST 2007


hi all,

As i had mentioned earlier, Noise injection still seems to be inconsistent 
in its response.Could someone make it work, dependably. I use the 
following script.
#!/bin/bash
# -20 36 20 0 0 0 0 (no attenuation from the antennas)
# power channel bandwidth ant1_att ant2_att ant3_att ant4_att
wget http://instrument1.orbit-lab.org:5012/interference/initialize
wget http://instrument1.orbit-lab.org:5012/interference/set?channel=$2
wget http://instrument1.orbit-lab.org:5012/interference/awgn?bandwidth=$3
wget http://instrument1.orbit-lab.org:5012/interference/set?power=$1
wget 
http://instrument1.orbit-lab.org:5012/interference/set?antenna-atten-1=$4
wget 
http://instrument1.orbit-lab.org:5012/interference/set?antenna-atten-2=$5
wget 
http://instrument1.orbit-lab.org:5012/interference/set?antenna-atten-3=$6
wget 
http://instrument1.orbit-lab.org:5012/interference/set?antenna-atten-4=$7
wget http://instrument1.orbit-lab.org:5012/interference/start
#wget http://instrument1.orbit-lab.org:5012/interference/stop

shanmuga at console.grid:~$ ./noiseset -20 36 20 0 0 0 0
--02:52:27-- 
http://instrument1.orbit-lab.org:5012/interference/initialize
            => `initialize.7'
Resolving instrument1.orbit-lab.org... 10.3.0.15
Connecting to instrument1.orbit-lab.org|10.3.0.15|:5012... connected.
HTTP request sent, awaiting response... 200 OK
Length: 19

100%[====================================>] 19            --.--K/s

02:52:27 (1.14 MB/s) - `initialize.7' saved [19/19]

--02:52:27-- 
http://instrument1.orbit-lab.org:5012/interference/set?channel=36
            => `set?channel=36'
Resolving instrument1.orbit-lab.org... 10.3.0.15
Connecting to instrument1.orbit-lab.org|10.3.0.15|:5012... connected.
HTTP request sent, awaiting response...

The same script works someother times...arbitrarily. As for noise 
injection there is no need for any other set up or configuration, I guess 
there couldn't be any other mistakes or initialisations. What is the 
solution for this? Can it be reset or made more predictable. Kindly help 
me out, if you have any clue.

Thanks
Shyam



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