David Thuente

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Total physical jamming in wireless networks can be realized by generating continuous high power noise in the vicinity of wireless receiver nodes. The purpose of this paper is to show, using OPNET simulations, that similar jamming effectiveness can be achieved with much lower total energy. In the first half of the paper, we study the effects of periodic(More)
It has been shown that reservation based MAC protocols such as 802.11b DCF are susceptible to Intelligent Jamming wherein a protocol aware jammer can bring down the network throughput essentially to zero by using very limited energy, see [1]. We propose and analyze intelligent jamming techniques based on " misbehaving " MAC level access timings. An(More)
Simulation and emulation techniques are commonly used to evaluate the performance of complex networked systems. Simulation conveniently predicts the behavior of a complex networked system while usually requiring fewer simplifying model assumptions often necessary for theoretical analysis. In contrast, emulation does not need to re-implement the target real(More)
In order to evaluate the performance of new network architectures and protocols, researchers have used diverse methods such as theoretical analysis, network simulation, testbed implementation , and emulation. Among these methods, emulation has been widely employed over the past decade because it is more flexible than simulation in that it does not need to(More)
—Service providers who dynamically scale cloud resources can significantly lower costs while providing a service level that conforms to a service level agreement. To do this, service providers must understand the tradeoffs within provisioning algorithms such as utilization versus system availability or the impact of service level agreement timescale on(More)
With the help of advanced technology, WDM networks nowadays can support up to more than 100 wavelength on a single fiber. This feature brings new challenges to routing and wavelength assignment (RWA) problem, which is a NP-hard problem. There are three existing categories of integer linear programming (ILP) formulations to solve this problem optimally,(More)