By I. Dolgachev
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Extra info for Algebraic Geometry. Proc. conf. Ann Arbor, 1981
In other words, in real-life situations, it is quite likely that the radio coverage region is highly irregular, because of the inﬂuence of walls, buildings, interference with preexisting infrastructure, and so on. However, including all these details in the network model would make it extremely complex and scenario dependent, hampering the derivation of meaningful and sufﬁciently general analytical results. For this reason, despite its limitations, the point graph model is widely used in the study of ad hoc network properties.
Furthermore, since many sensor nodes have been designed in the research community, their features are very well known. As a result, several sets of energy consumption measurements of wireless sensor nodes have been reported in the literature (Raghunathan et al. 2002). 3 reports the power dissipation of a Rockwell’s WINS sensor node (RockwellScienceCenter 2004). The node is composed of three main components: the microcontroller unit (MCU), the sensing apparatus (sensor), and the wireless radio. 02.
PL(u, v) Thus, the occurrence of a radio channel between any two network nodes can be predicted if the path loss model is known. Modeling path loss has historically been one of the most difﬁcult tasks of the wireless system designer. The mechanisms that regulate radio signal propagation in the environment can be grouped into three categories: reﬂection, diffraction and scattering. Reﬂection occurs Topology Control in Wireless Ad Hoc and Sensor Networks P. Santi 2005 John Wiley & Sons, Ltd 14 MODELING AD HOC NETWORKS when the electromagnetic wave hits the surface of an object that has very large dimensions when compared to the wavelength of the propagating signal.
Algebraic Geometry. Proc. conf. Ann Arbor, 1981 by I. Dolgachev
Categories: Geometry And Topology