ORBIT-USER: Reg Noise injection problem

Faiyaz Ahmed faiyaz at winlab.rutgers.edu
Thu Feb 1 11:26:22 EST 2007


Hi,

Perhaps you should put sleep statements between the wgets.  A call made 
probably takes a few seconds to implement and would probably require 
your script to wait before a new request is made.

Just a suggestion.

Faiyaz Ahmed

Shanmuga Sundaram wrote:
> 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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