406 citations · 638 across the 50 of their papers we have counts for
18 papers · 1 filter
Mixed Coherent and Non-Coherent Transmission for Multi-CPU Cell-Free Systems
Roberto P. Antonioli, Iran M. Braga, Gabor Fodor +2
Existing works on cell-free systems consider either coherent or non-coherent downlink data transmission and a network deployment with a single central processing unit (CPU). While…
A Distributed Game-Theoretic Solution for Power Management in the Uplink of Cell-Free Systems
Juno V. Saraiva, Roberto P. Antonioli, Gábor Fodor +2
This paper investigates cell-free massive multiple input multiple output systems with a particular focus on uplink power allocation. In these systems, uplink power control is highl…
Efficient Battery Usage in Wireless-Powered Cell-Free Systems with Self-Energy Recycling
Iran M. Braga, Roberto P. Antonioli, Gabor Fodor +2
This paper investigates wireless-powered cell-free systems, in which the users send their uplink data signal while simultaneously harvesting energy from network nodes and user term…
Cell-Free Data Power Control Via Scalable Multi-Objective Bayesian Optimisation
Sergey S. Tambovskiy, Gábor Fodor, Hugo Tullberg
Cell-free multi-user multiple input multiple output networks are a promising alternative to classical cellular architectures, since they have the potential to provide uniform servi…
Architecture, Protocols, and Algorithms for Location-Aware Services in Beyond 5G Networks
Peter Hammarberg, Julia Vinogradova, Gábor Fodor +3
The automotive and railway industries are rapidly transforming with a strong drive towards automation and digitalization, with the goal of increased convenience, safety, efficiency…
Federated Learning Using Three-Operator ADMM
Shashi Kant, José Mairton B. da Silva, Gabor Fodor +3
Federated learning (FL) has emerged as an instance of distributed machine learning paradigm that avoids the transmission of data generated on the users' side. Although data are not…
Channel Estimation in RIS-Assisted MIMO Systems Operating Under Imperfections
Paulo R. B. Gomes, Gilderlan T. de Araújo, Bruno Sokal +3
Reconfigurable intelligent surface is a potential technology component of future wireless networks due to its capability of shaping the wireless environment. The promising MIMO sys…
Reducing the Control Overhead of Intelligent Reconfigurable Surfaces Via a Tensor-Based Low-Rank Factorization Approach
Bruno Sokal, Paulo R. B. Gomes, André L. F. de Almeida +2
Passive intelligent reconfigurable surfaces (IRS) are becoming an attractive component of cellular networks due to their ability of shaping the propagation environment and thereby…
Tensor-Based Channel Estimation for RIS-Assisted Networks Operating Under Imperfections
Paulo R. B. Gomes, Gilderlan T. de Araújo, Bruno Sokal +3
Reconfigurable intelligent surface (RIS) is a candidate technology for future wireless networks. It enables to shape the wireless environment to reach massive connectivity and enha…
EVM Mitigation with PAPR and ACLR Constraints in Large-Scale MIMO-OFDM Using TOP-ADMM
Shashi Kant, Mats Bengtsson, Gabor Fodor +2
Although signal distortion-based peak-to-average power ratio (PAPR) reduction is a feasible candidate for orthogonal frequency division multiplexing (OFDM) to meet standard/regulat…
IRS Phase-Shift Feedback Overhead-Aware Model Based on Rank-One Tensor Approximation
Bruno Sokal, Paulo R. B. Gomes, André L. F. de Almeida +2
In this paper, we propose a rank-one tensor modeling approach that yields a compact representation of the optimum IRS phase-shift vector for reducing the feedback overhead. The mai…
Semi-Blind Joint Channel and Symbol Estimation for IRS-Assisted MIMO Systems
Gilderlan Tavares de Araújo, André Lima Férrer de Almeida, Rémy Boyer +1
Intelligent reflecting surface (IRS) is a promising technology for the 6th generation of wireless systems, realizing the smart radio environment concept. In this paper, we present…
Optimizing Pilot Spacing in MU-MIMO Systems Operating Over Aging Channels
Sebastian Fodor, Gábor Fodor, Doğa Gürgünoğlu +1
In the uplink of multiuser multiple input multiple output (MU-MIMO) systems operating over aging channels, pilot spacing is crucial for acquiring channel state information and achi…
Vehicular Positioning and Tracking in Multipath Non-Line-of-Sight Channels
Zhicheng Ye, Julia Vinogradova, Gábor Fodor +1
We consider the downlink transmission in a single cell multiple-input multiple-output system, in which the user equipment correspond to a vehicle moving along a given trajectory. T…
On Estimating the Autoregressive Coefficients of Time-Varying Fading Channels
Julia Vinogradova, Gábor Fodor, Peter Hammarberg
As several previous works have pointed out, the evolution of the wireless channels in multiple input multiple output systems can be advantageously modeled as an autoregressive proc…
On the Achievable SINR in MU-MIMO Systems Operating in Time-Varying Rayleigh Fading
Gábor Fodor, Sebastian Fodor, Miklós Telek
Minimizing the symbol error in the uplink of multi-user multiple input multiple output systems is important, because the symbol error affects the achieved signal-to-interference-pl…
Semi-Blind Joint Channel and Symbol Estimation in IRS-Assisted Multi-User MIMO Networks
Gilderlan Tavares de Araújo, Paulo Ricardo Brboza Gomes, André Lima Férrer de Almeida +2
Intelligent reflecting surface (IRS) is a promising technology for beyond 5th Generation of the wireless communications. In fully passive IRS-assisted systems, channel estimation i…
AI-Aided Integrated Terrestrial and Non-Terrestrial 6G Solutions for Sustainable Maritime Networking
Salwa Saafi, Olga Vikhrova, Gábor Fodor +2
The maritime industry is experiencing a technological revolution that affects shipbuilding, operation of both seagoing and inland vessels, cargo management, and working practices i…