[sim-wg] updates to TOSSIM

[Philip Levis]

On Sep 6, 2007, at 9:51 PM, Tal Rusak wrote:

> Hi,
>      I would like to clarify that the changes to the noise  
> quantization
> system checked into CVS will change the optimal value of the
> NOISE_HISTORY (k) constant in sim_noise.h. I have found that k = 30
> works the best with meyer-heavy. However, as before this change, the
> optimal k value appears to be noise-trace dependent.
>      Additionally, I have reviewed the CVS repository and found  
> that there
> are some debug comments still left in the code. I left them
> intentionally for review, but aren't they usually removed before
> uploading to CVS? Mostly these can be identified by searching for the
> strings "TODO" or "Tal Debug" in the files sim_noise.c and
> sim_noise.h.
>
>      I would be very interested in joining a conference call, however
> unfortunately I am on a tight semester schedule. However, I am sure
> that we can work something out.

Based on the results you've had, it's clear that TOSSIM needs to  
apply a more complex model to propagation, rather than a simple  
constant; that's the source of much of the discrepancy between the  
results in the CPM paper and the current version. I think the hope is  
for 2.1 to go out before the end of the year -- having an improved  
RSSI model by then would be great.

Phil