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Comparative Study of wireless LAN using OPNET and NS-2

This paper presents a comparative study between NS-2 and OPNET Modeler simulators focusing on the performance evaluation of the IEEE 802.11b technology on ad-hoc networks. Moreover, the research tests the throughput of WLAN ad-hoc network against the change in the number of nodes via simulation using OPNET Modeler and NS-2, and then compares that with reference to Bianchi Equations. From the results obtained it is concluded that NS-2 demonstrates more accurate results compared to OPNET Modeler in terms of throughput versus the numbers of nodes.