Expertini Research Research

Browse Research Papers

17+ open-access research outputs.

✕ Clear
🔍 boris petkovic 📂 Engineering
Showing 17 results for "boris petkovic" in Engineering
Engineering Preprint PDF DOI

On Channel Estimation for Group-Connected Beyond Diagonal RIS Assisted Multi-User MIMO Communication

Rui Wang, Junyuan Gao, Shuowen Zhang, Bruno Clerckx, Liang Liu · 2026

Beyond diagonal reconfigurable intelligent surface (BD-RIS) architectures offer superior beamforming gain over conventional diagonal RISs. However, the channel estimation overhead is the main hurdle f…

Read Paper →
Engineering Preprint PDF DOI

SORIS: A Self-Organized Reconfigurable Intelligent Surface Architecture for Wireless Communications

Evangelos Koutsonas, Alexandros-Apostolos A. Boulogeorgos, Stylianos E. Trevlakis, George C. Alexandropoulos, Theodoros A. Tsiftsis, Rui Zhang · 2026

In this paper, a new reconfigurable intelligent surface (RIS) hardware architecture, called self-organized RIS (SORIS), is proposed. The architecture incorporates a microcontroller connected to a sing…

Read Paper →
Engineering Preprint PDF DOI

Decentralized Cooperative Beamforming for BDRIS-Assisted Cell-Free MIMO OFDM Systems

Konstantinos D. Katsanos, George C. Alexandropoulos · 2026

In this paper, a wideband cell-free multi-stream multi-user Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) system is considered operating within a smart wirele…

Read Paper →
Engineering Preprint PDF DOI

Bab_Sak Robotic Intubation System (BRIS): A Learning-Enabled Control Framework for Safe Fiberoptic Endotracheal Intubation

Saksham Gupta, Sarthak Mishra, Arshad Ayub, Kamran Farooque, Spandan Roy, Babita Gupta · 2025

Endotracheal intubation is a critical yet technically demanding procedure, with failure or improper tube placement leading to severe complications. Existing robotic and teleoperated intubation systems…

Read Paper →
Engineering Preprint PDF DOI

Power Allocation and RIS Elements Optimisation for Reconfigurable Intelligent Surfaces assisted RSMA

Abdullah Qayyum, Maziar Nekovee · 2025

This paper proposes power allocation and the number of reconfigurable intelligent surfaces (RIS) elements optimisation in a RIS-assisted rate splitting multiple access (RSMA) system. The optimised RIS…

Read Paper →
Engineering Preprint PDF DOI

Angle diversity receiver as a key enabler for reliable ORIS-based Visible Light Communication

Borja Genoves Guzman, Maximo Morales-Cespedes, Ana Garcia Armada, Maite Brandt-Pearce · 2025

Visible Light Communication (VLC) offers a promising solution to satisfy the increasing demand for wireless data. However, link blockages remain a significant challenge. This paper addresses this issu…

Read Paper →
Engineering Preprint PDF DOI

ORIS allocation to minimize the outage probability in a multi-user VLC scenario

Borja Genoves Guzman, Maite Brandt-Pearce · 2025

Visible Light Communication (VLC) is a promising solution to address the growing demand for wireless data, leveraging the widespread use of light-emitting diodes (LEDs) as transmitters. However, its d…

Read Paper →
Engineering Preprint PDF DOI

Towards Quantum SAGINs Harnessing Optical RISs: Applications, Advances, and the Road Ahead

Phuc V. Trinh, Shinya Sugiura, Chao Xu, Lajos Hanzo · 2025

The space-air-ground integrated network (SAGIN) concept is vital for the development of seamless next-generation (NG) wireless coverage, integrating satellites, unmanned aerial vehicles, and manned ai…

Read Paper →
Engineering Preprint PDF DOI

Optical RIS-enabled Multiple Access Communications

Georgios D. Chondrogiannis, Athanasios P. Chrysologou, Alexandros-Apostolos A. Boulogeorgos, Nestor D. Chatzidiamantis, Harald Haas · 2025

In this paper, we identify optical reconfigurable intelligent surfaces (ORISs) as key enablers of next-generation free-space optical (FSO) multiple access systems. By leveraging their beam steering an…

Read Paper →
Engineering Preprint PDF DOI

Accelerometer-Based Multivariate Time-Series Dataset for Calf Behavior Classification

Oshana Dissanayake, Sarah E. McPherson, Joseph Allyndree, Emer Kennedy, Padraig Cunningham, Lucile Riaboff · 2024

Getting new insights on pre-weaned calf behavioral adaptation to routine challenges (transport, group relocation, etc.) and diseases (respiratory diseases, diarrhea, etc.) is a promising way to improv…

Read Paper →
Engineering Preprint PDF DOI

Optical RISs Improve the Secret Key Rate of Free-Space QKD in HAP-to-UAV Scenarios

Phuc V. Trinh, Shinya Sugiura, Chao Xu, Lajos Hanzo · 2024

Large optical reconfigurable intelligent surfaces (ORISs) are proposed for employment on building rooftops to facilitate free-space quantum key distribution (QKD) between highaltitude platforms (HAPs)…

Read Paper →
Engineering Preprint PDF DOI

Performance Analysis of Hybrid RF-Reconfigurable Intelligent Surfaces Assisted FSO Communication

Haibo Wang, Zaichen Zhang, Bingcheng Zhu, Yidi Zhang · 2022

Optical reconfigurable intelligent surface (ORIS) is an emerging technology that can achieve reconfigurable optical propagation environments by precisely adjusting signal's reflection and shape throug…

Read Paper →
Engineering Preprint PDF DOI

CRANE: a 10 Degree-of-Freedom, Tele-surgical System for Dexterous Manipulation within Imaging Bores

Dimitri A. Schreiber, Zhaowei Yu, Hanpeng Jiang, Taylor Henderson, Guosong Li, Julie Yu, Renjie Zhu, Alexander M. Norbash, Michael C. Yip · 2021

Physicians perform minimally invasive percutaneous procedures under Computed Tomography (CT) image guidance both for the diagnosis and treatment of numerous diseases. For these procedures performed wi…

Read Paper →
Engineering Preprint PDF DOI

The Impact of Virtual Reality and Viewpoints in Body Motion Based Drone Teleoperation

Matteo Macchini, Manana Lortkipanidze, Fabrizio Schiano, Dario Floreano · 2021

The operation of telerobotic systems can be a challenging task, requiring intuitive and efficient interfaces to enable inexperienced users to attain a high level of proficiency. Body-Machine Interface…

Read Paper →
Engineering Preprint PDF DOI

Does spontaneous motion lead to intuitive Body-Machine Interfaces? A fitness study of different body segments for wearable telerobotics

Matteo Macchini, Jan Frogg, Fabrizio Schiano, Dario Floreano · 2020

Human-Robot Interfaces (HRIs) represent a crucial component in telerobotic systems. Body-Machine Interfaces (BoMIs) based on body motion can feel more intuitive than standard HRIs for naive users as t…

Read Paper →
Engineering Peer-Reviewed PDF DOI

The modification of polyurethane foams using new boroorganic polyols (II) polyurethane foams from boron-modified hydroxypropyl urea derivatives.

 · 1970

The work focuses on research related to determination of application possibility of new, ecofriendly boroorganic polyols in rigid polyurethane foams production. Polyols were obtained from hydroxypropy…

Read Paper →
Engineering Peer-Reviewed PDF DOI

Multi-state modelling reveals sex-dependent transmission, progression and severity of tuberculosis in wild badgers.

 · 1970

Statistical models of epidemiology in wildlife populations usually consider diseased individuals as a single class, despite knowledge that infections progress through states of severity. Bovine tuberc…

Read Paper →