131 citations · 369 across the 34 of their papers we have counts for
11 papers · 1 filter
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…
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…
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…
Performance Limits of Energy Detection Systems with Massive Receiver Arrays
Lishuai Jing, Zoran Utkovski, Elisabeth de Carvalho +1
Energy detection (ED) is an attractive technique for symbol detection at receivers equipped with a large number of antennas, for example in millimeter wave communication systems. T…
Random Access in C-RAN for User Activity Detection with Limited-Capacity Fronthaul
Zoran Utkovski, Osvaldo Simeone, Tamara Dimitrova +1
Cloud-Radio Access Network (C-RAN) is characterized by a hierarchical structure in which the baseband processing functionalities of remote radio heads (RRHs) are implemented by mea…
Finite-SNR Bounds on the Sum-Rate Capacity of Rayleigh Block-Fading Multiple-Access Channels with no a Priori CSI
Rahul Devassy, Giuseppe Durisi, Johan Östman +3
We provide nonasymptotic upper and lower bounds on the sum-rate capacity of Rayleigh block-fading multiple-access channels for the setup where a priori channel state information is…
Random Access Protocols with Collision Resolution in a Noncoherent Setting
Zoran Utkovski, Tome Eftimov, Petar Popovski
Wireless systems are increasingly used for Machine-Type Communication (MTC), where the users sporadically send very short messages. In such a setting, the overhead imposed by chann…
Protocol Coding through Reordering of User Resources, Part II: Practical Coding Strategies
Petar Popovski, Zoran Utkovski, Kasper F. Trillingsgaard
We use the term protocol coding to denote the communication strategies in which information is encoded through the actions taken by a certain communication protocol. In this work w…
Protocol Coding through Reordering of User Resources, Part I: Capacity Results
Petar Popovski, Zoran Utkovski
The vast existing wireless infrastructure features a variety of systems and standards. It is of significant practical value to introduce new features and devices without changing t…
Protocol Coding through Reordering of User Resources: Applications and Capacity Results
Petar Popovski, Zoran Utkovski
While there are continuous efforts to introduce new communication systems and standards, it is legitimate to ask the question: how can one send additional bits by minimally changin…