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An ad hoc network is a collection of mobile nodes that dynamically form a temporary network. Routing in a MANET is challenging because of the dynamic topology and the lack of an existing fixed infrastructure. In such a scenario a mobile host can act as both a host and a router forwarding packets for other mobile nodes in the network. Routing protocols used in Mobile Ad hoc NETworks (MANET) must adapt to frequent or continual changes of topology, while simultaneously limiting the impact of tracking these changes on wireless resources. In this paper, the author investigate about the effect of change in number of nodes, node speed and pause time on Packet Delivery Ratio (PDR) of MANET reactive routing protocols.
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