Interference Alignment Algorithm for Quasi-Static MIMO Cellular System

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Executive Summary

In this paper, the authors propose an iterative Interference Alignment (IA) algorithm for quasi-static MIMO cellular networks. Such networks impose a key technical challenge in the IA algorithm design, namely the overlapping between the direct and interfering links due to the cellular topology. They shall address this challenge and propose a three stage IA algorithm. As illustration, they analyze the achievable Degree of Freedom (DoF) of the proposed algorithm for a symmetric MIMO cellular network. The derived DoF bound is also backward compatible with that achieved on k-pair MIMO interference channels.

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