Nikolaos Pappas

Innovation-Based Sampling for New Information

Jiping Luo, Anthony Ephremides, Nikolaos Pappas

This work introduces innovation-based sampling of continuous stochastic processes, in which a sample is generated only when the process reveals ``sufficiently new'' information rel…

Resource-Constrained Semantic-Aware Remote Estimation with Overlapping Sensor Coverage

Bowen Sun, Nikolaos Pappas

We study semantic-aware remote estimation of multiple finite-state Markov sources observed by K sensors with overlapping coverage. The sensors share a time-division multiple-access…

Real-Time Reconstruction of Markov Sources over MPR Channels

Pansee S. Elessawy, Nikolaos Pappas

This paper studies the real-time reconstruction and remote actuation of two binary Markov sources over a shared wireless channel with multi-packet reception (MPR). Unlike many exis…

Real-Time Reconstruction and Actuation Error Analysis for Markov Sources over MPR Channels

Pansee S. Elessawy, Nikolaos Pappas

We study real-time reconstruction and actuation for two binary Markov sources that share a wireless multi-packet reception (MPR) channel. Each sensor follows a stationary randomize…

Version AoI Optimization under Power and General Distortion Constraints in Uplink NOMA

Gangadhar Karevvanavar, Rajshekhar V. Bhat, Nikolaos Pappas

The Version Age of Information (VAoI) quantifies information freshness by measuring the number of versions the receiver lags behind. This paper studies VAoI minimization in an $M$ -…

From Information Freshness to Semantics of Information and Goal-oriented Communications

Jiping Luo, Erfan Delfani, Mehrdad Salimnejad +1

Future wireless networks must support real-time, data-driven cyber-physical systems in which communication is tightly coupled with sensing, inference, control, and decision-making.…

Age of Information Minimization in Goal-Oriented Communication with Processing and Cost of Actuation Error Constraints

Rishabh S. Pomaje, Jayanth S., Rajshekhar V. Bhat +1

We study a goal-oriented communication system in which a source monitors an environment that evolves as a discrete-time, two-state Markov chain. At each time slot, a controller dec…

On the Role of Age and Semantics of Information in Remote Estimation of Markov Sources

Jiping Luo, Nikolaos Pappas

This paper studies semantics-aware remote estimation of Markov sources. We leverage two complementary information attributes: the urgency of lasting impact, which quantifies the si…

Remote State Estimation over a Wearing Channel: Information Freshness vs. Channel Aging

Jiping Luo, George Stamatakis, Osvaldo Simeone +1

We study the remote estimation of a linear Gaussian system over a channel that wears out over time and with every use. The sensor can either transmit a fresh measurement in the cur…

On the Cost of Consecutive Estimation Error: Significance-Aware Non-linear Aging

Jiping Luo, Nikolaos Pappas

This paper considers the semantics-aware remote state estimation of an asymmetric Markov chain with prioritized states. Due to resource constraints, the sensor needs to trade betwe…

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…

Exploiting Data Significance in Remote Estimation of Discrete-State Markov Sources

Jiping Luo, Nikolaos Pappas

We consider semantics-aware remote estimation of a discrete-state Markov source with both normal (low-priority) and alarm (high-priority) states. Erroneously announcing a normal st…