Hi:
I do recall helping another member with this area of study and he too had a hard time finding documentation.
Try your local library. Most librarians are very resourceful.
Maybe looking around on a few of your local college websites may provide some documentation.
These were the only articles I came across that are remotely close to your question. I found a script that you can alter if you can use it.
Aside from that further looking only lead me to the Wikipedia article.
http://en.wikipedia.org/wiki/IEEE_802.15.4
http://www.ifn.et.tu-dresden.de/~mar...vironment.html
http://linear.engmath.dal.ca/ns-2/do...cc-source.html