Radon–Hurwitz Grassmannian codes

M Fickus, E Gomez-Leos… - IEEE Transactions on …, 2025 - ieeexplore.ieee.org
Every equi-isoclinic tight fusion frame (EITFF) is a type of optimal code in a Grassmannian,
consisting of subspaces of a finite-dimensional Hilbert space for which the smallest principal …

Equi-isoclinic subspaces from symmetry

M Fickus, JW Iverson, J Jasper, DG Mixon - arXiv preprint arXiv …, 2024 - arxiv.org
We describe a flexible technique that constructs tight fusion frames with prescribed transitive
symmetry. Applying this technique with representations of the symmetric and alternating …

Equi-isoclinic subspaces, covers of the complete graph, and complex conference matrices

M Fickus, JW Iverson, J Jasper, DG Mixon - Linear Algebra and its …, 2024 - Elsevier
Abstract In 1992, Godsil and Hensel published a ground-breaking study of distance-regular
antipodal covers of the complete graph that, among other things, introduced an important …