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Fixed it…

July 30, 2013

After some more tinkering with the MATLAB model yesterday I finally got results that look like a model of network traffic!

n vs g mk 2

 

I’m really pleased with this graph, as if you look in text books this is the line you see used all the time for packet loss in a network with increasing traffic load, which is in effect what I’m simulating here.

You can see from the graph that the 802.11g client remains able to send all its traffic no problem, while the 802.11n client sheds more and more packets. The is because it is simply never able to get hold of the channel. I’m going to put together a video in the next couple of days to explain why this is.

The next step with this is going to be putting realistic wifi parameters into the model (at the moment the amount of attempts the client makes to send a packet before giving up isn’t very realistic). Hopefully I’ll be able to expand this model to investigate other wifi parameters too.

Anyway, that’s all for now. I’m working on getting some anechoic chamber measurements today, but first I need to convince my laptop to talk to it!

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