93 citations · 97 across the 20 of their papers we have counts for
22 papers
Trustworthy, Explainable, and Sustainable Decentralized Intelligence for 6G Networks
Giovanni Perin, Michele Rossi, Enrique Tomás Martínez Beltrán +13
As 6G networks transition from theoretical frameworks into operational realities, artificial intelligence (AI) evolves from an add-on optimization tool into a distributed and inter…
Optimal Sampling and Actuation for Real-Time Monitoring of Markov Sources
Mehrdad Salimnejad, Anthony Ephremides, Marios Kountouris +1
This paper studies efficient data management and timely information dissemination for real-time monitoring of an N-state Markov process, with the objective of enabling accurate sta…
Real-Time Remote Monitoring of Correlated Markovian Sources
Mehrdad Salimnejad, Marios Kountouris, Nikolaos Pappas
We investigate real-time tracking of two correlated stochastic processes over a shared wireless channel. The joint evolution of the processes is modeled as a two-dimensional discre…
Affine Frequency Division Multiplexing: From Communication to Sensing
Ali Bemani, Nassar Ksairi, Marios Kountouris
Affine Frequency Division Multiplexing (AFDM) has been proposed as an effective waveform for achieving the full diversity of doubly-dispersive (delay-Doppler) channels. While this…
From OFDM to AFDM: Enabling Adaptive Integrated Sensing and Communication in High-Mobility Scenarios
Haoran Yin, Yanqun Tang, Jun Xiong +7
Integrated sensing and communication (ISAC) is a key feature of next-generation wireless networks, enabling a wide range of emerging applications such as vehicle-to-everything (V2X…
Age of Information-Aware Cognitive Shared Access Networks with Energy Harvesting
Georgios Smpokos, Dionysis Xenakis, Marios Kountouris +1
This study investigates a cognitive shared access network with energy harvesting capabilities operating under Age of Information (AoI) constraints for the primary user. Secondary t…
Agoran: An Agentic Open Marketplace for 6G RAN Automation
Ilias Chatzistefanidis, Navid Nikaein, Andrea Leone +5
Next-generation mobile networks must reconcile the often-conflicting goals of multiple service owners. However, today's network slice controllers remain rigid, policy-bound, and un…
Ambiguity Function Analysis of AFDM Signals for Integrated Sensing and Communications
Haoran Yin, Yanqun Tang, Yuanhan Ni +7
Affine frequency division multiplexing (AFDM) is a promising chirp-based waveform with high flexibility and resilience, making it well-suited for next-generation wireless networks,…
Pull-Based Query Scheduling for Goal-Oriented Semantic Communication
Pouya Agheli, Nikolaos Pappas, Marios Kountouris
This paper addresses query scheduling for goal-oriented semantic communication in pull-based status update systems. We consider a system where multiple sensing agents (SAs) observe…
So Timely, Yet So Stale: The Impact of Clock Drift in Real-Time Systems
Mehrdad Salimnejad, Nikolaos Pappas, Marios Kountouris
In this paper, we address the problem of timely delivery of status update packets in a real-time communication system, where a transmitter sends status updates generated by a sourc…
Optimizing Version Innovation Age for Monitoring Markovian Source in Energy-Harvesting Systems
Mehrdad Salimnejad, Anthony Ephremides, Marios Kountouris +1
We study the real-time remote tracking of a two-state Markov process by an energy harvesting source. The source decides whether to transmit over an unreliable channel based on the…
Trustworthy Intrusion Detection: Confidence Estimation Using Latent Space
Ioannis Pitsiorlas, George Arvanitakis, Marios Kountouris
This work introduces a novel method for enhancing confidence in anomaly detection in Intrusion Detection Systems (IDS) through the use of a Variational Autoencoder (VAE) architectu…
Integrated Push-and-Pull Update Model for Goal-Oriented Effective Communication
Pouya Agheli, Nikolaos Pappas, Petar Popovski +1
This paper studies decision-making for goal-oriented effective communication. We consider an end-to-end status update system where a sensing agent (SA) observes a source, generates…
Age of Information Versions: a Semantic View of Markov Source Monitoring
Mehrdad Salimnejad, Marios Kountouris, Anthony Ephremides +1
We consider the problem of real-time remote monitoring of a two-state Markov process, where a sensor observes the state of the source and makes a decision on whether to transmit th…
DRACO: Decentralized Asynchronous Federated Learning over Row-Stochastic Wireless Networks
Eunjeong Jeong, Marios Kountouris
Recent developments and emerging use cases, such as smart Internet of Things (IoT) and Edge AI, have sparked considerable interest in the training of neural networks over fully dec…
Goal-Oriented and Semantic Communication in 6G AI-Native Networks: The 6G-GOALS Approach
Emilio Calvanese Strinati, Paolo Di Lorenzo, Vincenzo Sciancalepore +17
Recent advances in AI technologies have notably expanded device intelligence, fostering federation and cooperation among distributed AI agents. These advancements impose new requir…
Version Innovation Age and Age of Incorrect Version for Monitoring Markovian Sources
Mehrdad Salimnejad, Marios Kountouris, Anthony Ephremides +1
In this paper, we propose two new performance metrics, coined the Version Innovation Age (VIA) and the Age of Incorrect Version (AoIV) for real-time monitoring of a two-state Marko…
A Latent Space Metric for Enhancing Prediction Confidence in Earth Observation Data
Ioannis Pitsiorlas, Argyro Tsantalidou, George Arvanitakis +2
This study presents a new approach for estimating confidence in machine learning model predictions, specifically in regression tasks utilizing Earth Observation (EO) data, with a p…
Goal-Oriented Multiple Access Connectivity for Networked Intelligent Systems
Pouya Agheli, Nikolaos Pappas, Marios Kountouris
We design a self-decision goal-oriented multiple access scheme, where sensing agents observe a common event and individually decide to communicate the event's attributes as updates…
From OTFS to AFDM: A Comparative Study of Next-Generation Waveforms for ISAC in Doubly-Dispersive Channels
Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, Junil Choi +4
Next-generation wireless systems will offer integrated sensing and communications (ISAC) functionalities not only in order to enable new applications, but also as a means to mitiga…
Effective Communication: When to Pull Updates?
Pouya Agheli, Nikolaos Pappas, Petar Popovski +1
We study a pull-based communication system where a sensing agent updates an actuation agent using a query control policy, which is adjusted in the evolution of an observed informat…
AFDM vs OTFS: A Comparative Study of Promising Waveforms for ISAC in Doubly-Dispersive Channels
Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, Junil Choi +4
**PLEASE FIND THE FULL EXTENDED ARTICLE "From OTFS to AFDM: A Comparative Study of Next-Generation Waveforms for ISAC in Doubly-Dispersive Channels" (Accepted for publication at th…