131 citations · 369 across the 34 of their papers we have counts for
35 papers
An Age of Information Characterization of SPS
Maria Bezmenov, Matthias Frey, Zoran Utkovski +1
We derive a closed-form approximation of the stationary distribution of the Age of Information (AoI) of the semi-persistent scheduling (SPS) protocol which is a core part of NR-V2X…
Advancements in UWB: Paving the Way for Sovereign Data Networks in Healthcare Facilities
Khan Reaz, Thibaud Ardoin, Lea Muth +11
Ultra-Wideband (UWB) technology re-emerges as a groundbreaking ranging technology with its precise micro-location capabilities and robustness. This paper highlights the security di…
Evolution of the 5G New Radio Two-Step Random Access towards 6G Unsourced MAC
Patrick Agostini, Jean-Francois Chamberland, Federico Clazzer +7
This report summarizes some considerations on possible evolutions of grant-free random access in the next generation of the 3GPP wireless cellular standard. The analysis is carried…
Optimized Detection with Analog Beamforming for Monostatic Integrated Sensing and Communication
Rodrigo Hernangómez, Jochen Fink, Renato L. G. Cavalcante +2
In this paper, we formalize an optimization framework for analog beamforming in the context of monostatic integrated sensing and communication (ISAC), where we also address the pro…
Neuromorphic Wireless Device-Edge Co-Inference via the Directed Information Bottleneck
Yuzhen Ke, Zoran Utkovski, Mehdi Heshmati +3
An important use case of next-generation wireless systems is device-edge co-inference, where a semantic task is partitioned between a device and an edge server. The device carries…
BiSPARCs for Unsourced Random Access in Massive MIMO
Patrick Agostini, Zoran Utkovski, Slawomir Stanczak
This paper considers the massive MIMO unsourced random access problem in a quasi-static Rayleigh fading setting. The proposed coding scheme is based on a concatenation of a "conven…
Constant Weight Codes with Gabor Dictionaries and Bayesian Decoding for Massive Random Access
Patrick Agostini, Zoran Utkovski, Alexis Decurninge +2
This paper considers a general framework for massive random access based on sparse superposition coding. We provide guidelines for the code design and propose the use of constant-w…
Open or not open: Are conventional radio access networks more secure and trustworthy than Open-RAN?
Felix Klement, Stefan Katzenbeisser, Vincent Ulitzsch +5
The Open RAN architecture is a promising and future-oriented architecture. It is intended to open up the radio access network (RAN) and enable more innovation and competition in th…
Transfer Learning in Multi-Agent Reinforcement Learning with Double Q-Networks for Distributed Resource Sharing in V2X Communication
Hammad Zafar, Zoran Utkovski, Martin Kasparick +1
This paper addresses the problem of decentralized spectrum sharing in vehicle-to-everything (V2X) communication networks. The aim is to provide resource-efficient coexistence of ve…
Set-Theoretic Learning for Detection in Cell-Less C-RAN Systems
Daniyal Amir Awan, Renato L. G. Cavalcante, Zoran Utkovski +1
Cloud-radio access network (C-RAN) can enable cell-less operation by connecting distributed remote radio heads (RRHs) via fronthaul links to a powerful central unit. In conventiona…
Joint Source-Channel Coding for Semantics-Aware Grant-Free Radio Access in IoT Fog Networks
Johannes Dommel, Zoran Utkovski, Osvaldo Simeone +1
A fog-radio access network (F-RAN) architecture is studied for an Internet-of-Things (IoT) system in which wireless sensors monitor a number of multi-valued events and transmit in…
Sparse Signatures with Forward Error Correction Coding for Non-Orthogonal Massive Access
Johannes Dommel, Zoran Utkovski, Petar Popovski +1
In massive connectivity scenarios with short packets, of interest is the regime where users share wireless resources in a non-orthogonal fashion. Small payloads combined with spora…
Correlates of the country differences in the infection and mortality rates during the first wave of the COVID-19 pandemic: Evidence from Bayesian model averaging
Viktor Stojkoski, Zoran Utkovski, Petar Jolakoski +2
In the initial wave of the COVID-19 pandemic we observed great discrepancies in both infection and mortality rates between countries. Besides the biological and epidemiological fac…
Evolution of cooperation in networked heterogeneous fluctuating environments
Viktor Stojkoski, Marko Karbevski, Zoran Utkovski +2
Fluctuating environments are situations where the spatio-temporal stochasticity plays a significant role in the evolutionary dynamics. The study of the evolution of cooperation in…
Joint Source-Channel Coding and Bayesian Message Passing Detection for Grant-Free Radio Access in IoT
Johannes Dommel, Zoran Utkovski, Slawomir Stanczak +1
Consider an Internet-of-Things (IoT) system that monitors a number of multi-valued events through multiple sensors sharing the same bandwidth. Each sensor measures data correlated…
Lead-lag Relationships in Foreign Exchange Markets
Lasko Basnarkov, Viktor Stojkoski, Zoran Utkovski +1
Lead-lag relationships among assets represent a useful tool for analyzing high frequency financial data. However, research on these relationships predominantly focuses on correlati…
Correlation Patterns in Foreign Exchange Markets
Lasko Basnarkov, Viktor Stojkoski, Zoran Utkovski +1
The value of an asset in a financial market is given in terms of another asset known as numeraire. The dynamics of the value is non-stationary and hence, to quantify the relationsh…
Cooperation dynamics in the networked geometric Brownian motion
Viktor Stojkoski, Zoran Utkovski, Lasko Basnarkov +1
Recent works suggest that pooling and sharing may constitute a fundamental mechanism for the evolution of cooperation in well-mixed fluctuating environments. The rationale is that,…
Option Pricing with Heavy-Tailed Distributions of Logarithmic Returns
Lasko Basnarkov, Viktor Stojkoski, Zoran Utkovski +1
A growing body of literature suggests that heavy tailed distributions represent an adequate model for the observations of log returns of stocks. Motivated by these findings, here w…
Sparse Three-parameter Restricted Indian Buffet Process for Understanding International Trade
Melanie F. Pradier, Viktor Stojkoski, Zoran Utkovski +2
This paper presents a Bayesian nonparametric latent feature model specially suitable for exploratory analysis of high-dimensional count data. We perform a non-negative doubly spars…
Multiplex Network Structure Enhances the Role of Generalized Reciprocity in Promoting Cooperation
Viktor Stojkoski, Zoran Utkovski, Elisabeth Andre +1
In multi-agent systems, cooperative behavior is largely determined by the network structure which dictates the interactions among neighboring agents. These interactions often exhib…
The Role of Multiplex Network Structure in Cooperation through Generalized Reciprocity
Viktor Stojkoski, Zoran Utkovski, Elisabeth Andre +1
Recent studies suggest that the emergence of cooperative behavior can be explained by generalized reciprocity, a behavioral mechanism based on the principle of "help anyone if help…
Cooperation dynamics of generalized reciprocity in state-based social dilemmas
Viktor Stojkoski, Zoran Utkovski, Lasko Basnarkov +1
We introduce a framework for studying social dilemmas in networked societies where individuals follow a simple state-based behavioral mechanism based on generalized reciprocity, wh…
Economic Complexity Unfolded: Interpretable Model for the Productive Structure of Economies
Zoran Utkovski, Melanie F. Pradier, Viktor Stojkoski +2
Economic complexity reflects the amount of knowledge that is embedded in the productive structure of an economy. It resides on the premise of hidden capabilities - fundamental endo…