Practical Challenges of IA in Frequency

Abstract

Interference Alignment (IA) is a promising technique at the physical layer which allows to increase the Degree-of-Freedom (DOF) of a communication by aligning all interfering signals into the same dimension, while the desired signal lies unaffected in an orthogonal dimension. IA has been widely studied in theory, but only limited practical work exists, since it poses significant challenges for real-world deployments. In this report, we study issues which are key to enable IA in practice.