[Ns-developers] Channel scanning in 802.11

[mathieu lacage]

On Fri, 2008-10-10 at 15:16 +0000, Giuseppe Barba wrote:
> Hi all,
> in order to correctly simulate scenarios with multi channel communication,
> you must model the adjacent channel interference (ACI) and the adjacent
> channel rejection (ACR). For this reason is  necessary to preventively
> engineering the Phy model.
> For this scope we can just consider the ideal TX power masks of various
> classes of TX filter (class A, B, C e D) to model the overlapping channel
> (ACI), and the RX filter mask to consider the rejection to adjacent
> interference with various classes of filter (e.g. class 2).
> For example: if a node transmit over an adjacent channel, we can compute the
> correspondent overlapped TX interfered power by attenuate the TX power by a
> factor depending on Tx mask at frequency shift. Then we can compute the RX
> interfering power through loss model adopted for in channel communication.

Yes, that is pretty similar to what is done in nsmiracle and, yes, I
would be happy to see a patch to implement something similar :)

Mathieu