Comparison of inter-cell interference Models for Cellular Networks

In this paper we compare some methods to analyze the influence inter-cell interference will have on coverage/outage probabilities in cellular OFDMA networks. The framework is based on a common method to find the Laplace transform of the interference from neighboring cells. It turns out that the analysis is highly simplified if the fading has a Suzuki probability distribution. The modeling approach allows for both fixed and stochastic locations of base stations, and the different models are applied to quantify the effect of the interference on the coverage/outage probabilities in LTE networks. We consider several scenarios ranging from fixed hexagonal layout of base station to stochastic distribution of base stations based on Poisson Point Processes. Numerical examples show quite large differences in coverage/outage probabilities for the network scenarios considered.