Mustafa Demirhan first wrote the ns2 extension for MAC 802.15.3.
I got the package from his website, and placed it here for anyone need it.
You can directly download it in the below link:
(Both ns2_802_15_3.tar.gz and howto.tar.gz should be downloaded.)
All rights are belong to Mustafa Demirhan.
Any problem, please contact me
For more information, please visit http://hrwpan-ns2.blogspot.com/