16 citations · 78 across the 41 of their papers we have counts for
23 papers · 1 filter
State-aware Real-time Tracking and Remote Reconstruction of a Markov Source
Mehrdad Salimnejad, Marios Kountouris, Nikolaos Pappas
The problem of real-time remote tracking and reconstruction of a two-state Markov process is considered here. A transmitter sends samples from an observed information source to a r…
Analysis of the Age of Information in Age-Threshold Slotted ALOHA
Howard H. Yang, Nikolaos Pappas, Tony Q. S. Quek +1
We investigate the performance of a random access network consisting of source-destination dipoles. The source nodes transmit information packets to their destinations over a share…
Semantic Filtering and Source Coding in Distributed Wireless Monitoring Systems
Pouya Agheli, Nikolaos Pappas, Marios Kountouris
The problem of goal-oriented semantic filtering and timely source coding in multiuser communication systems is considered here. We study a distributed monitoring system in which mu…
Real-time Remote Reconstruction of a Markov Source and Actuation over Wireless
Mehrdad Salimnejad, Marios Kountouris, Nikolaos Pappas
In this work, we study the problem of real-time tracking and reconstruction of an information source with the purpose of actuation. A device monitors an -state Markov process an…
Age of Information Under Frame Slotted ALOHA-Based Status Updating Protocol
Zhiling Yue, Howard H. Yang, Meng Zhang +1
We propose a frame slotted ALOHA (FSA)-based protocol for a random access network where sources transmit status updates to their intended destinations. We evaluate the effect of su…
Distortion Minimization with Age of Information and Cost Constraints
Jayanth S, Nikolaos Pappas, Rajshekhar V Bhat
We consider a source monitoring a stochastic process with a transmitter to transmit timely information through a wireless ON/OFF channel to a destination. We assume that once the s…
Age of Actuation in a Wireless Power Transfer System
Ali Nikkhah, Anthony Ephremides, Nikolaos Pappas
In this paper, we study a model relevant to semantics-aware goal-oriented communications. More specifically, observations from an external process are transmitted through status up…
Real-time Reconstruction of Markov Sources and Remote Actuation over Wireless Channels
Mehrdad Salimnejad, Marios Kountouris, Nikolaos Pappas
In this work, we study the real-time tracking and reconstruction of an information source with the purpose of actuation. A device monitors the state of the information source and t…
Age of Information with On-Off Service
Ashirwad Sinha, Praful D. Mankar, Nikolaos Pappas +1
This paper considers a communication system where a source sends time-sensitive information to its destination. We assume that both arrival and service processes of the messages ar…
On the Interplay Between Deadline-Constrained Traffic and the Number of Allowed Retransmissions in Random Access Networks
Nikolaos Nomikos, Themistoklis Charalambous, Yvonne-Anne Pignolet +1
In this paper, a network comprising wireless devices equipped with buffers transmitting deadline-constrained data packets over a slotted-ALOHA random-access channel is studied. Alt…
Robust Beamforming Design for IRS-Aided URLLC in D2D Networks
Jing Cheng, Chao Shen, Zheng Chen +1
Intelligent reflecting surface (IRS) and device-to-device (D2D) communication are two promising technologies for improving transmission reliability between transceivers in communic…
Analysis of Age of Information in Dual Updating Systems
Zhengchuan Chen, Dapeng Deng, Howard H. Yang +5
We study the average Age of Information (AoI) and peak AoI (PAoI) of a dual-queue status update system that monitors a common stochastic process. Although the double queue parallel…
Semantics-Aware Source Coding in Status Update Systems
Pouya Agheli, Nikolaos Pappas, Marios Kountouris
We consider a communication system in which the destination receives status updates from an information source that observes a physical process. The transmitter performs semantics-…
RIS-aided D2D Communication Design for URLLC Packet Delivery
Jing Cheng, Chao Shen, Zheng Chen +1
In this paper, we consider a smart factory scenario where a set of actuators receive critical control signals from an access point (AP) with reliability and low latency requirement…
Performance Analysis of a MIMO System with Bursty Traffic in the presence of Energy Harvesting Jammer
Sujatha Allipuram, Parthajit Mohapatra, Nikolaos Pappas +2
This paper explores the role of multiple antennas in mitigating jamming attacks for the Rayleigh fading environment with exogenous random traffic arrival. The jammer is assumed to…
Semantics-Empowered Communication for Networked Intelligent Systems
Marios Kountouris, Nikolaos Pappas
Wireless connectivity has traditionally been regarded as an opaque data pipe carrying messages, whose context-dependent meaning and effectiveness have been ignored. Nevertheless, i…
Power Minimization for Age of Information Constrained Dynamic Control in Wireless Sensor Networks
Mohammad Moltafet, Markus Leinonen, Marian Codreanu +1
We consider a system where multiple sensors communicate timely information about various random processes to a sink. The sensors share orthogonal sub-channels to transmit such info…
Optimizing Information Freshness in Two-Way Relay Networks
Bohai Li, He Chen, Nikolaos Pappas +1
In this paper, we investigate an amplify-and-forward (AF) based two-way cooperative status update system, where two sources aim to exchange status updates with each other as timely…
AoI-optimal Joint Sampling and Updating for Wireless Powered Communication Systems
Mohamed A. Abd-Elmagid, Harpreet S. Dhillon, Nikolaos Pappas
This paper characterizes the structure of the Age of Information (AoI)-optimal policy in wireless powered communication systems while accounting for the time and energy costs of ge…
Throughput and Age of Information in a Cellular-based IoT Network
Praful D. Mankar, Zheng Chen, Mohamed A. Abd-Elmagid +2
This paper studies the interplay between device-to-device (D2D) communications and real-time monitoring systems in a cellular-based Internet of Things (IoT) network. In particular,…
Power Minimization in Wireless Sensor Networks With Constrained AoI Using Stochastic Optimization
Mohammad Moltafet, Markus Leinonen, Marian Codreanu +1
In this paper, we consider a system where multiple low-power sensors communicate timely information about a random process to a sink. The sensors share orthogonal subchannels to tr…
Optimizing Information Freshness in a Multiple Access Channel with Heterogeneous Devices
Zheng Chen, Nikolaos Pappas, Emil Björnson +1
In this work, we study age-optimal scheduling with stability constraints in a multiple access channel with two heterogeneous source nodes transmitting to a common destination. The…
A Reinforcement Learning Framework for Optimizing Age-of-Information in RF-powered Communication Systems
Mohamed A. Abd-Elmagid, Harpreet S. Dhillon, Nikolaos Pappas
In this paper, we study a real-time monitoring system in which multiple source nodes are responsible for sending update packets to a common destination node in order to maintain th…