An Analytical Model for the Intercell Interference Power in the Downlink of Wireless Cellular Networks

TL;DR

This paper develops an analytical and semi-analytical framework to estimate and model the distribution of intercell interference power in downlink wireless networks, accounting for various fading and shadowing effects.

Contribution

It introduces a new methodology combining analytical and semi-analytical approaches to accurately model interference power distribution under diverse propagation conditions.

Findings

Derived an analytical expression for interference power with Rayleigh fading.

Created a semi-analytical histogram method for combined fading effects.

Developed a versatile statistical model applicable to various shadowing parameters.

Abstract

In this paper, we propose a methodology for estimating the statistics of the intercell interference power in the downlink of a multicellular network. We first establish an analytical expression for the probability law of the interference power when only Rayleigh multipath fading is considered. Next, focusing on a propagation environment where small-scale Rayleigh fading as well as large-scale effects, including attenuation with distance and lognormal shadowing, are taken into consideration, we elaborate a semi-analytical method to build up the histogram of the interference power distribution. From the results obtained for this combined small- and large-scale fading context, we then develop a statistical model for the interference power distribution. The interest of this model lies in the fact that it can be applied to a large range of values of the shadowing parameter. The proposed methods can also be easily extended to other types of networks.