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Theoretical Limits of Language Model Alignment $f$-Divergence Regularized RLHF: Two Tales of Sampling and Unified Analyses A Unified Measure-Theoretic View of Diffusion, Score-Based, and Flow Matching Generative Models When Can Voting Help, Hurt, or Change Course? 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Genie Chains: Exploring Outer Bounds on the Degrees of Freedom of MIMO Interference Networks
Chenwei Wang, Hua Sun, Syed A. Jafar · 2014-04-09 · via cs.IT updates on arXiv.org

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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