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Practical wireless networks are finite, and hence non-stationary with nodestypically non-homo-geneously deployed over the area. This leads to alocation-dependent performance and to boundary effects which are both oftenneglected in network modeling. In this work, interference in networks withnodes distributed according to an isotropic but not necessarily stationaryPoisson point process (PPP) are studied. The resulting link performance isprecisely characterized as a function of (i) an arbitrary receiver location andof (ii) an arbitrary isotropic shape of the spatial distribution. Closed-formexpressions for the first moment and the Laplace transform of the interferenceare derived for the path loss exponents $\alpha=2$ and $\alpha=4$, and simplebounds are derived for other cases. The developed model is applied to practicalproblems in network analysis: for instance, the accuracy loss due to neglectingborder effects is shown to be undesirably high within transition regions ofcertain deployment scenarios. Using a throughput metric not relying on thestationarity of the spatial node distribution, the spatial throughput locallyaround a given node is characterized.

Interference in Poisson Networks with Isotropically Distributed Nodes