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In this paper, the authors present architecture to emulate multihop wireless networks on StarBED, a wired-network testbed at Hokuriku Research Center of NICT, Japan. The architecture uses a distributed approach, and it can effectively emulate in real time the properties of WLAN contention-based media access mechanism. Network emulation is an experimental technique that intends to bridge the gap between simulation and real-world experiments, and thus, it delivers a significant impact on the wireless research community. There are two approaches for emulation, one is the centralized approach, and the other is the distributed approach.
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