Abstract

Despite all the benefits of small cells in heterogeneous networks (HetNets) such as coverage improvement and spectral efficiency, they may cause additional interferences. Interference alignment (IA) by cell clustering is a possible candidate to manage HetNets interferences. Several picocells coexist within a microcell area while the nodes that cause interferences in a similar range of the desired signals are grouped in a cluster. IA removes the intra-cluster interferences, and the strong remaining interferences are estimated by interference detection. The simulation results show improvement in the symbol-error rate by the proposed scheme.

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