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Using an approach developed in physics, the authors propose a new framework for the study of cellular networks. The key idea of the physical network model they propose is to replace the discrete Base Stations (BS) entities by a continuum of transmitters which are spatially distributed in the network. This allows one to establish a closed form formula of the other-cell downlink interference factor f, as a function of the location of the mobile. They define here f as the ratio of outer cell received power (i.e. the power received from other cells) to the inner cell received power. This physical model allows calculating the influence of interference on any mobile in a cell, whatever its position.
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