4 papers
Low Probability of Detection Communication Using Noncoherent Grassmannian Signaling
Diego Cuevas, Mikel Gutiérrez, Jesús Ibáñez +1
This paper proposes a noncoherent low probability of detection (LPD) communication system based on direct sequence spread spectrum (DSSS) and Grassmannian signaling. Grassmannian c…
Noncoherent MIMO Communications: Theoretical Foundation, Design Approaches, and Future Challenges
Khac-Hoang Ngo, Diego Cuevas, Ruben de Miguel Gil +3
Noncoherent communication is a promising paradigm for future wireless systems where acquiring accurate channel state information (CSI) is challenging or infeasible. It provides met…
A Flag Decomposition for Hierarchical Datasets
Nathan Mankovich, Ignacio Santamaria, Gustau Camps-Valls +1
Flag manifolds encode nested sequences of subspaces and serve as powerful structures for various computer vision and machine learning applications. Despite their utility in tasks s…
Statistical characterization of the chordal product determinant of Grassmannian codes
Javier Álvarez-Vizoso, Carlos Beltrán, Diego Cuevas +3
We consider the chordal product determinant, a measure of the distance between two subspaces of the same dimension. In information theory, collections of elements in the complex Gr…