[Ns-developers] Reproducing Broch AODV Performance Numbers

[Nicola Baldo]

> Is is possible to make a simple change to ns-3 such that it
> receives based on received signal strength like ns-2 in order to
> rule this out or in?  Just a temporary toggle to check if this
> could explain the differences in performance?

As a quick hack, you can modify YansWifiPhy::EndReceive as follows:

- if (m_random.GetValue () > snrPer.per)
+ if (event->GetRxPowerW () > RxPowerThresholdW)

this bypasses the interference model of YansWifiPhy, and allows you to 
use a simple threshold, as ns-2 does.

As for the value of the CS threshold in the Broch paper, you should sett 
the EnergyDetectionThreshold attribute in YansWifiPhy to an equivalent 
value.

As for capture... that's not trivial. Maybe just neglect it for the 
moment and see what results you get.

Finally, let me say that if anybody wants to develop a new WifiPhy 
implementation that uses a simple protocol interference model (i.e., a 
threshold model like the one in ns-2), I would support merging that.
But I think it should be separate from YansWifiPhy.

Nicola