Framework for intercell interference avoidance in MIMO OFDMA system

Abstract

The paper provides an overview of various techniques used to avoid intercell interference (ICI) in MIMO OFDMA systems. ICI occurs in a cellular communication system when adjacent cells use the same radio resources, i.e. frequency reuse of unity. This interference experienced is maximum by the edge users. The edge users suffer from severe ICI leading to throughput degradation. Hence edge users contribute for the reduction of overall cell throughput. Many papers have been reviewed, compared and this resulted in numerous ways to solve the ICI problem and to select the best suitable solution. ICI avoidance is a technique to to minimize the effect of ICI and in turn improves overall cell performance. Avoidance techniques restrict the usage of resources like power and bandwidth among the users leading to better resource allocation. Thus dynamic allocation of resources among the edge users and center users is considered as the best technique to avoid ICI.