Abstract
In this paper, we propose a novel genie chains approach to obtain information theoretic degrees of freedom (DoF) outer bounds for MIMO wireless interference networks. This new approach creates a chain of mappings from genie signals provided to a receiver to the exposed signal spaces at that receiver, which then serve as the genie signals for the next receiver in the chain subject to certain linear independence requirements, essentially converting an information theoretic DoF outer bound problem into a linear algebra problem. Several applications of the genie chains approach are presented.
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