2 papers
cs.IT2026
Geometry-Informed Optimization of Binary RIS Configurations for Communication and Sensing
Angelos Gkekas, Alexandros I. Papadopoulos, Petros Andreas Pantazopoulos +3
Practical Reconfigurable Intelligent Surfaces (RISs) often support only a small number of phase states, making their configuration inherently discrete. For a 1-bit RIS with ele…
cs.IT2025
On the Computability of Finding Capacity-Achieving Codes
Angelos Gkekas, Nikos A. Mitsiou, Ioannis Souldatos +1
This work studies the problem of constructing capacity-achieving codes from an algorithmic perspective. Specifically, we prove that there exists a Turing machine which, given a dis…