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The authors validate the IEEE 802.11 MAC layer model in ns3 by means of measurements on the EXTREME testbed. They consider different scenarios: communications within a single pair of nodes, multi-user communications using either VoIP or saturated traffic, and communications in the presence of hidden nodes. For each scenario, they describe in detail their testbed and simulation setup, and compare the results provided by the ns3 simulator with the performance measured on the testbed. The research in the field of wireless communications and networking has always relied rather heavily on network simulation tools for the performance evaluation.
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