hi, this link can help you http://www.comp.nus.edu.sg/~wuxiucha/research/reactive/report/80211ChannelinNS2_new.pdf#search=%2280211ChannelinNS2_new%22
best regards hamid reza __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com