Thank you so much

Thank you 

ns-2 with combination mannasim or mitleach

for more www.nshubforum.com

I think that NS-2 is the best for this purpose.

Thank you

Ns2 is the best due to its large group support

Ns2 is very well proven ... good documentation available. lot of people have used ns2 so codes are also available and it is accepted in the research community. You need not do many of the coding which is already implemented. If you refer MatLab many of the things you have to develop of your own and the  acceptance of the results using that code also becomes an issue sometimes. Better to use internationally accepted WSN simulators. However, it always the choice of the researcher and the convenience.

All the best for the research.

Thank you very much