ORBIT-USER: Using the Noise Generator in Experiments

[Shivesh Makharia]

Ok that clears some doubts but then how do I know the where the noise
antennas are placed now ?

Is it:

(Thats from the website)

The noise antennas follow the Cartesian coordinate system (ie, the axis line
up with the node grid). They are located as follows:

   - Antenna 1: Between node2-1 and node2-2
   - Antenna 2: Between node2-7 and node2-8
   - Antenna 3: Between node7-1 and node7-2
   - Antenna 4: Between node7-7 and node7-8.

Actually in my setup, lets say I have data flowing from node [1,5] to [6,1]
over channel 60. How can I know how many hops is the noise generator cause
when I toggle the noise generator on/off I dont see any degradation in the
link quality.
Umm.. I hope I have explained my question clearly.

Thanks

Shivesh

On 7/26/06, Sachin Ganu <sachin at winlab.rutgers.edu> wrote:
>
> Shivesh,
>
> 4,4 is an abstraction for the antenna position based on the older
> grid. Eventually this will be replaced by more insightful co-ordinates
> that represent the actual antenna positions.
>
> Until now, we did not have the capability for individual control of
> the antennas and the power  was equally divided amongst these
> antennas.
>
> For the bigger grid, we will soon have individual antenna control
> where the user can inject noise on a part of the grid using an antenna
> located in that section of the grid.
>
> Hope that helps
>
> On 7/26/06, Shivesh Makharia <shivesh83 at gmail.com> wrote:
> >
> > Hi,
> >
> > I had a query regarding how to get the noise generator up. In the sample
> > script provided on the webpage :
> >
> >
> > antenna(4,4).signal {|s|
> >   s.bandwidth = 20
> >   s.channel = 36
> >   s.power = prop.noisePower
> >
> > what does the antenna(4,4) mean ? I get that the other properties set
> the
> > noise on channel 36, with bandwidth 20 and all. Is it the cartesian
> > co-ordinate system of the antenna placements ?
> > Basically I wanted to inject noise on a particular channel, of a
> particular
> > db on a random cluster of nodes.
> >
> > Thanks
> >
> > Shivesh
> >
> > -- CONTACT INFORMATION
> >
> > Last Name        : Makharia
> > First Name        : Shivesh
> > Email                : shivesh83 at gmail.com
> >
> > " I arise in the morning torn between a desire to improve the world and
> a
> > desire to enjoy the world. This makes it hard to plan the day "
> > - E.B. White
>



-- 
CONTACT INFORMATION

Last Name        : Makharia
First Name        : Shivesh
Email                : shivesh83 at gmail.com

" I arise in the morning torn between a desire to improve the world and a
desire to enjoy the world. This makes it hard to plan the day "
- E.B. White
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