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The Internet of things, emerging pervasive and sensor networks are low data-rate wireless networks with, a priori, no specific topology and no fixed infrastructure. Their primary requirements are twofold: First, low power consumption and, due to environmental concerns, low emitted power. Second, robustness to poor propagation environments and multi-user interference. Impulse-Radio Ultra-Wide Band (IR-UWB) physical layers have the potential to satisfy these requirements. Because the features of IR-UWB physical layers differ from narrow-band physical layers, the design rules of IR-UWB networks are likely to be different than for narrow-band wireless networks. Indeed, to optimally use the resources available, it is crucial for the network layers to take into account and take advantage of the underlying physical layer.
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