6 papers
Investigation of RIS Integration in Satellite Systems Guided by ITU-R VSAT Radiation Diagram
Symeon Vaidanis, Athanasios D. Panagopoulos
The introduction of Reconfigurable Intelligent Surfaces (RIS) technology marks a transformative era in modern communication systems, enhancing coverage and facilitating higher data…
Properties of Array Factor of Reconfigurable Intelligent Surfaces for Radio Communications
Symeon Vaidanis, Athanasios D. Panagopoulos
This paper delves into the intricate aspects of Reconfigurable Intelligent Surfaces (RIS) in the antenna design. It investigates the properties of the array factor of RIS, highligh…
Neilson's Weak vs. Strong Loss Aversion: A Characterization and a Generalized CPT-Utility Function
Symeon Vaidanis, Marios Kountouris
In multi-objective and multi-criteria decision-making under risk, especially in settings involving individual behavior, risk-aware analysis based on subjective evaluation has becom…
Probabilistic Risk Sensitivity and Loss Aversion in Cumulative Prospect Theory
Symeon Vaidanis, Marios Kountouris
This paper develops a binary-gamble framework for characterizing risk sensitivity and loss aversion in Cumulative Prospect Theory (CPT). The proposed probabilistic risk-sensitivity…
Optimization for Semantic-Aware Resource Allocation under CPT-based Utilities
Symeon Vaidanis, Photios A. Stavrou, Marios Kountouris
The problem of resource allocation in goal-oriented semantic communication with semantic-aware utilities and subjective risk perception is studied here. By linking information impo…
Goal-Oriented Semantic Resource Allocation with Cumulative Prospect Theoretic Agents
Symeon Vaidanis, Photios A. Stavrou, Marios Kountouris
We introduce a resource allocation framework for goal-oriented semantic networks, where participating agents assess system quality through subjective (e.g., context-dependent) perc…