11 citations · 27 across the 34 of their papers we have counts for
13 papers · 1 filter
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…
Analysis of Age of Information for A Discrete-Time hybrid Dual-Queue System
Zhengchuan Chen, Yi Qu, Nikolaos Pappas +3
Using multiple sensors to update the status process of interest is promising in improving the information freshness. The unordered arrival of status updates at the monitor end pose…
Coexistence of Real-Time Source Reconstruction and Broadband Services Over Wireless Networks
Anup Mishra, Nikolaos Pappas, Čedomir Stefanović +5
Achieving a flexible and efficient sharing of wireless resources among a wide range of novel applications and services is one of the major goals of the sixth-generation of mobile s…
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…
Optimizing Information Freshness in IoT Systems with Update Rate Constraints: A Token-Based Approach
Erfan Delfani, Nikolaos Pappas
In Internet of Things (IoT) status update systems, where information is sampled and subsequently transmitted from a source to a destination node, the imperative necessity lies in m…
Adaptive Federated Learning Over the Air
Chenhao Wang, Zihan Chen, Nikolaos Pappas +3
We propose a federated version of adaptive gradient methods, particularly AdaGrad and Adam, within the framework of over-the-air model training. This approach capitalizes on the in…