MATLAB 802.11 Simulation

I am new to MATLAB and I want to simulate the basic functionality of the 802.11 protocol. basically generating random call attempts from a computer. Any help or sample code would really help
Thanks

Your question is too vauge. Do you mean the Baseband or the RF....

First search Matlab's "File Exchange" web page and Google to :
1) Find out on your own.
2) Form a better/more direct question to ask here.

Good luck.