no code implementations • 24 Jan 2025 • Seonghoon Yoo, Sangwoo Park, Petar Popovski, Joonhyuk Kang, Osvaldo Simeone
Modern software-defined networks, such as Open Radio Access Network (O-RAN) systems, rely on artificial intelligence (AI)-powered applications running on controllers interfaced with the radio access network.
no code implementations • 20 Jan 2025 • Nasrin Razmi, Sourav Mukherjee, Bho Matthiesen, Armin Dekorsy, Petar Popovski
To enhance the efficiency of the FL training process, satellites apply in-network aggregation, referred to as incremental aggregation.
no code implementations • 16 Dec 2024 • Van-Phuc Bui, Shashi Raj Pandey, Israel Leyva-Mayorga, Petar Popovski
The immense volume of data generated by Earth observation (EO) satellites presents significant challenges in transmitting it to Earth over rate-limited satellite-to-ground communication links.
no code implementations • 6 Dec 2024 • Ao Chen, Wei Chen, Bo Ai, Petar Popovski
This paper explores contention-based random access (CBRA) schemes for asynchronous access in massive multiple-input multiple-output (MIMO) systems.
no code implementations • 6 Dec 2024 • Robin J. Williams, Pablo Ramirez-Espinosa, Olena Semenovska, Petar Popovski
The implications of the power conservation conditions upon the end-to-end communications channel is analyzed.
no code implementations • 20 Nov 2024 • Anup Mishra, Israel Leyva-Mayorga, Petar Popovski
This work investigates the coexistence of sensing and communication functionalities in a base station (BS) serving a communication user in the uplink and simultaneously detecting a radar target with the same frequency resources.
no code implementations • 20 Nov 2024 • Anup Mishra, Nikolaos Pappas, Čedomir Stefanović, Onur Ayan, Xueli An, Yiqun Wu, Petar Popovski, Israel Leyva-Mayorga
Furthermore, we analyse the performance of the broadband user in terms of throughput and energy efficiency.
no code implementations • 13 Nov 2024 • Van Phuc Bui, Junya Shiraishi, Petar Popovski, Shashi Raj Pandey
Training a high-quality Federated Learning (FL) model at the network edge is challenged by limited transmission resources.
no code implementations • 23 Sep 2024 • Nasrin Razmi, Bho Matthiesen, Armin Dekorsy, Petar Popovski
Federated learning in satellite constellations, where the satellites collaboratively train a machine learning model, is a promising technology towards enabling globally connected intelligence and the integration of space networks into terrestrial mobile networks.
no code implementations • 12 Sep 2024 • Meiyi Zhu, Matteo Zecchin, Sangwoo Park, Caili Guo, Chunyan Feng, Petar Popovski, Osvaldo Simeone
This paper presents communication-constrained distributed conformal risk control (CD-CRC) framework, a novel decision-making framework for sensor networks under communication constraints.
no code implementations • 12 Sep 2024 • Van-Phuc Bui, Pedro Maia de Sant Ana, Soheil Gherekhloo, Shashi Raj Pandey, Petar Popovski
This paper presents a Digital Twin (DT) framework for the remote control of an Autonomous Guided Vehicle (AGV) within a Network Control System (NCS).
no code implementations • 25 Jul 2024 • Sourav Mukherjee, Nasrin Razmi, Armin Dekorsy, Petar Popovski, Bho Matthiesen
This paper investigates federated learning (FL) in a multi-hop communication setup, such as in constellations with inter-satellite links.
no code implementations • 19 Jul 2024 • Pouya Agheli, Nikolaos Pappas, Petar Popovski, Marios Kountouris
This paper studies decision-making for goal-oriented effective communication.
no code implementations • 16 Jul 2024 • Martin Voigt Vejling, Hyowon Kim, Christophe A. N. Biscio, Henk Wymeersch, Petar Popovski
This paper analyzes monostatic sensing by a user equipment (UE) for a setting in which the UE is unable to resolve multiple targets due to their interference within a single resolution bin.
no code implementations • 6 Jul 2024 • Kun Chen-Hu, Petar Popovski
However, RIS can also be adversely employed to disrupt the existing communication systems by introducing new types of vulnerability to the physical layer.
1 code implementation • 1 Jul 2024 • Tobias Kallehauge, Anders E. Kalør, Pablo Ramírez-Espinosa, Christophe Biscio, Petar Popovski
Estimating the probability of rare channel conditions is a central challenge in ultra-reliable wireless communication, where random events, such as deep fades, can cause sudden variations in the channel quality.
no code implementations • 20 May 2024 • Federico Lozano-Cuadra, Beatriz Soret, Israel Leyva-Mayorga, Petar Popovski
First, an offline learning phase relies on decentralized decisions and a global Deep Neural Network (DNN) trained with global experiences.
no code implementations • 11 May 2024 • Qihao Peng, Hong Ren, Cunhua Pan, Maged Elkashlan, Ana Garcia Armada, Petar Popovski
The transmission power of the base station and the phase shifts of the RIS are jointly devised to maximize the weighted sum rate while considering the spatially correlation and channel estimation errors.
no code implementations • 10 May 2024 • David E. Ruíz-Guirola, Onel L. A. López, Samuel Montejo-Sánchez, Israel Leyva Mayorga, Zhu Han, Petar Popovski
This paper presents an approach for energy-neutral Internet of Things (IoT) scenarios where the IoT devices (IoTDs) rely entirely on their energy harvesting capabilities to sustain operation.
no code implementations • 7 May 2024 • Amirhossein Azarbahram, Onel L. A. López, Petar Popovski, Shashi Raj Pandey, Matti Latva-aho
Radio frequency (RF) wireless power transfer (WPT) is a promising technology for sustainable support of massive Internet of Things (IoT).
no code implementations • 23 Apr 2024 • Van-Phuc Bui, Daniel Abode, Pedro M. de Sant Ana, Karthik Muthineni, Shashi Raj Pandey, Petar Popovski
The paper examines a scenario wherein sensors are deployed within an Industrial Networked Control System, aiming to construct a digital twin (DT) model for a remotely operated Autonomous Guided Vehicle (AGV).
no code implementations • 11 Apr 2024 • Sara Cavallero, Fabio Saggese, Junya Shiraishi, Shashi Raj Pandey, Chiara Buratti, Petar Popovski
We consider a setup with Internet of Things (IoT), where a base station (BS) collects data from nodes that use two different communication modes.
no code implementations • 2 Apr 2024 • Jiechen Chen, Sangwoo Park, Petar Popovski, H. Vincent Poor, Osvaldo Simeone
This work proposes a novel architecture that integrates a wake-up radio mechanism within a split computing system consisting of remote, wirelessly connected, NPUs.
no code implementations • 17 Feb 2024 • Tobias Kallehauge, Anders E. Kalør, Fengchun Zhang, Petar Popovski
Using experimental channel measurements from 127 locations, we demonstrate the use case of providing statistical guarantees for rate selection in ultra-reliable low-latency communication (URLLC) using CDI maps.
no code implementations • 14 Feb 2024 • Nasrin Razmi, Bho Matthiesen, Armin Dekorsy, Petar Popovski
Mega-constellations of small satellites have evolved into a source of massive amount of valuable data.
no code implementations • 12 Feb 2024 • Emilio Calvanese Strinati, Paolo Di Lorenzo, Vincenzo Sciancalepore, Adnan Aijaz, Marios Kountouris, Deniz Gündüz, Petar Popovski, Mohamed Sana, Photios A. Stavrou, Beatriz Soret, Nicola Cordeschi, Simone Scardapane, Mattia Merluzzi, Lanfranco Zanzi, Mauro Boldi Renato, Tony Quek, Nicola di Pietro, Olivier Forceville, Francesca Costanzo, Peizheng Li
Recent advances in AI technologies have notably expanded device intelligence, fostering federation and cooperation among distributed AI agents.
no code implementations • 6 Jan 2024 • Herman L. dos Santos, Martin Voigt Vejling, Taufik Abrão, Petar Popovski
This type of topology causes impairments to the established communication methods by generating undesirable interference both in frequency and space, which is worsened when using wideband signals.
no code implementations • 26 Dec 2023 • Jie Cao, Ernest Kurniawan, Amnart Boonkajay, Nikolaos Pappas, Sumei Sun, Petar Popovski
This status information, such as dynamic plant state and Markov Process-based context information, is then received/estimated by the controller for remote control.
1 code implementation • 19 Dec 2023 • Fabio Saggese, Victor Croisfelt, Francesca Costanzo, Junya Shiraishi, Radosław Kotaba, Paolo Di Lorenzo, Petar Popovski
This paper investigates the role and the impact of control operations for dynamic mobile edge computing (MEC) empowered by Reconfigurable Intelligent Surfaces (RISs), in which multiple devices offload their computation tasks to an access point (AP) equipped with an edge server (ES), with the help of the RIS.
1 code implementation • 14 Dec 2023 • Pranava Singhal, Shashi Raj Pandey, Petar Popovski
The standard client selection algorithms for Federated Learning (FL) are often unbiased and involve uniform random sampling of clients.
no code implementations • 8 Dec 2023 • Mathias Thorsager, Israel Leyva-Mayorga, Beatriz Soret, Petar Popovski
The traditional role of the network layer is the transfer of packet replicas from source to destination through intermediate network nodes.
no code implementations • 5 Dec 2023 • Shashi Raj Pandey, Pierre Pinson, Petar Popovski
Data markets facilitate decentralized data exchange for applications such as prediction, learning, or inference.
no code implementations • 27 Nov 2023 • Van-Phuc Bui, Shashi Raj Pandey, Pedro M. de Sant Ana, Petar Popovski
The setup considered in the paper consists of sensors in a Networked Control System that are used to build a digital twin (DT) model of the system dynamics.
no code implementations • 14 Nov 2023 • Victor Croisfelt, Shashi Raj Pandey, Osvaldo Simeone, Petar Popovski
Conventional retransmission (ARQ) protocols are designed with the goal of ensuring the correct reception of all the individual transmitter's packets at the receiver.
no code implementations • 14 Oct 2023 • Amirhossein Azarbahram, Onel L. A. Lopez, Petar Popovski, Matti Latva-aho
One of the primary goals of future wireless systems is to foster sustainability, for which, radio frequency (RF) wireless power transfer (WPT) is considered a key technology enabler.
1 code implementation • 13 Oct 2023 • Martin V. Vejling, Christophe A. N. Biscio, Petar Popovski
We propose an efficient solution to the state estimation problem in multi-scan multi-sensor multiple extended target sensing scenarios.
no code implementations • 27 Jun 2023 • Cristian J. Vaca-Rubio, Carles Navarro Manchón, Ramoni Adeogun, Petar Popovski
In wireless communication systems, mmWave beam tracking is a critical task that affects both sensing and communications, as it is related to the knowledge of the wireless channel.
no code implementations • 19 May 2023 • Shashi Raj Pandey, Van Phuc Bui, Petar Popovski
A client has to decide its transmission plan on when not to participate in FL.
no code implementations • 17 May 2023 • Van-Phuc Bui, Thinh Q. Dinh, Israel Leyva-Mayorga, Shashi Raj Pandey, Eva Lagunas, Petar Popovski
The amount of data generated by Earth observation satellites can be enormous, which poses a great challenge to the satellite-to-ground connections with limited rate.
no code implementations • 12 May 2023 • Yanna Bai, Wei Chen, Bo Ai, Petar Popovski
Grant-free non-orthogonal multiple access has been regarded as a viable approach to accommodate access for a massive number of machine-type devices with small data packets.
no code implementations • 9 May 2023 • Herman L. dos Santos, Cristian J. Vaca-Rubio, Radosław Kotaba, Yi Song, Taufik Abrão, Petar Popovski
This paper proposes a method for reducing {third-party} exposure to electromagnetic fields (EMF) by exploiting the capability of a reconfigurable intelligent surfaces' (RIS) to manipulate the electromagnetic environment.
no code implementations • 12 Mar 2023 • Linh T. Nguyen, Lam Duc Nguyen, Thong Hoang, Dilum Bandara, Qin Wang, Qinghua Lu, Xiwei Xu, Liming Zhu, Petar Popovski, Shiping Chen
Second, we focus on the convergence of blockchain and data sharing to give a clear picture of this landscape and propose a reference architecture for blockchain-based data sharing.
no code implementations • 28 Feb 2023 • Federico Mason, Federico Chiariotti, Andrea Zanella, Petar Popovski
In this work, we propose a joint design that combines goal-oriented communication and networked control into a single optimization model, an extension of a multiagent POMDP which we call Cyber-Physical POMDP (CP-POMDP).
Multi-agent Reinforcement Learning
reinforcement-learning
+2
1 code implementation • 15 Feb 2023 • Kfir M. Cohen, Sangwoo Park, Osvaldo Simeone, Petar Popovski, Shlomo Shamai
The dynamic scheduling of ultra-reliable and low-latency traffic (URLLC) in the uplink can significantly enhance the efficiency of coexisting services, such as enhanced mobile broadband (eMBB) devices, by only allocating resources when necessary.
no code implementations • 6 Feb 2023 • Herman L. Santos, Victor Croisfelt, Cristian J. Vaca-Rubio, Taufik Abrao, Petar Popovski
We introduce OnRMap, an online radio mapping (RMap) approach for the sensing and localization of active users (AUs), devices that are transmitting radio signals, and passive elements (PEs), elements that are in the environment and are illuminated by the AUs' radio signals.
no code implementations • 3 Feb 2023 • Van-Phuc Bui, Shashi Raj Pandey, Andreas Casparsen, Federico Chiariotti, Petar Popovski
From the viewpoint of communication and networking, this will represent an evolution of the game networking technology, designed to interconnect massive users in real-time online gaming environments.
no code implementations • 30 Jan 2023 • Maik Röper, Bho Matthiesen, Dirk Wübben, Petar Popovski, Armin Dekorsy
In case of imperfect position knowledge, the performance degradation of the robust precoder is relatively small.
no code implementations • 26 Jan 2023 • Van-Phuc Bui, Shashi Raj Pandey, Federico Chiariotti, Petar Popovski
This paper presents an approach to schedule observations from different sensors in an environment to ensure their timely delivery and build a digital twin (DT) model of the system dynamics.
no code implementations • 9 Dec 2022 • Arthur S. de Sena, Pedro H. J. Nardelli, Daniel B. da Costa, Petar Popovski, Constantinos B. Papadias, Merouane Debbah
Aiming at overcoming practical issues of successive interference cancellation (SIC), this paper proposes a dual-polarized rate-splitting multiple access (RSMA) technique for a downlink massive multiple-input multiple-output (MIMO) network.
no code implementations • 17 Nov 2022 • Kamran Keykhosravi, Musa Furkan Keskin, Gonzalo Seco-Granados, Petar Popovski, Henk Wymeersch
Specifically, we observe that the state of the user with a high speed (42 m/s) can be estimated virtually with the same accuracy as a static user.
no code implementations • 2 Nov 2022 • Arthur Sousa de Sena, Pedro H. J. Nardelli, Daniel Benevides da Costa, Petar Popovski, Constantinos B. Papadias, Merouane Debbah
This paper takes advantage of this additional DoF to alleviate practical issues of successive interference cancellation (SIC) in rate-splitting multiple access (RSMA) schemes.
no code implementations • 2 Oct 2022 • Wali Ullah Khan, Asad Mahmood, Arash Bozorgchenani, Muhammad Ali Jamshed, Ali Ranjha, Eva Lagunas, Haris Pervaiz, Symeon Chatzinotas, Björn Ottersten, Petar Popovski
This paper first describes the introduction of 6G-empowered V2X communications and IRS technology.
no code implementations • 20 Sep 2022 • Shashi Raj Pandey, Lam Duc Nguyen, Petar Popovski
Incentives that compensate for the involved costs in the decentralized training of a Federated Learning (FL) model act as a key stimulus for clients' long-term participation.
no code implementations • 1 Sep 2022 • Nithin Babu, Marco Virgili, Mohammad Al-jarrah, Xiaoye Jing, Emad Alsusa, Petar Popovski, Andrew Forsyth, Christos Masouros, Constantinos B. Papadias
In this work, we propose a framework for energy-efficient trajectory design of an unmanned aerial vehicle (UAV)-based portable access point (PAP) deployed to serve a set of ground nodes (GNs).
no code implementations • 30 Aug 2022 • Nithin Babu, Petar Popovski, Constantinos B. Papadias
In this work, we study the trade-off between the reliability and the investment cost of an unmanned aerial system (UAS) consisting of a set of unmanned aerial vehicles (UAVs) carrying radio access nodes, called portable access points (PAPs)), deployed to serve a set of ground nodes (GNs).
no code implementations • 30 Aug 2022 • Dick Carrillo, Charalampos Kalalas, Petra Raussi, Diomidis S. Michalopoulos, Demóstenes Z. Rodríguez, Heli Kokkoniemi-Tarkkanen, Kimmo Ahola, Pedro H. J. Nardelli, Gustavo Fraidenraich, Petar Popovski
Fifth-generation (5G) and beyond systems are expected to accelerate the ongoing transformation of power systems towards the smart grid.
no code implementations • 15 Aug 2022 • Zhendong Peng, Gui Zhou, Cunhua Pan, Hong Ren, A. Lee Swindlehurst, Petar Popovski, Gang Wu
Specifically, in Stage I, the channel state information (CSI) of a typical user is estimated.
no code implementations • 10 Aug 2022 • Nithin Babu, Igor Donevski, Alvaro Valcarce, Petar Popovski, Jimmy Jessen Nielsen, Constantinos B. Papadias
Moreover, the user fairness, energy efficiency, and hence the FEE value of the system can be improved by efficiently moving the PAP above the GNs.
no code implementations • 16 Jul 2022 • Ali Ramezani-Kebrya, Iman Tabrizian, Fartash Faghri, Petar Popovski
We introduce MixTailor, a scheme based on randomization of the aggregation strategies that makes it impossible for the attacker to be fully informed.
no code implementations • 21 Jun 2022 • Cristian J. Vaca-Rubio, Roberto Pereira, Xavier Mestre, David Gregoratti, Zheng-Hua Tan, Elisabeth de Carvalho, Petar Popovski
Environmental scene reconstruction is of great interest for autonomous robotic applications, since an accurate representation of the environment is necessary to ensure safe interaction with robots.
no code implementations • 15 Jun 2022 • Shashi Raj Pandey, Pierre Pinson, Petar Popovski
Finally, we reveal the structure of the formulated problem as a distributed coalition game and solve it following the simplified split-and-merge algorithm.
no code implementations • 13 Jun 2022 • Enes Krijestorac, Ghaith Hattab, Petar Popovski, Danijela Cabric
The first approach is based on a predefined model of the environment, while the second approach is measurement-based model-free approach, which is applicable to any environment.
no code implementations • 4 Jun 2022 • Nasrin Razmi, Bho Matthiesen, Armin Dekorsy, Petar Popovski
Distributed training of machine learning models directly on satellites in low Earth orbit (LEO) is considered.
no code implementations • 1 Jun 2022 • Bho Matthiesen, Nasrin Razmi, Israel Leyva-Mayorga, Armin Dekorsy, Petar Popovski
Federated learning (FL) has recently emerged as a distributed machine learning paradigm for systems with limited and intermittent connectivity.
no code implementations • 30 May 2022 • Tobias Kallehauge, Pablo Ramìrez-Espinosa, Anders E. Kalør, Christophe Biscio, Petar Popovski
This paper proposes exploiting the spatial correlation of wireless channel statistics beyond the conventional received signal strength maps by constructing statistical radio maps to predict any relevant channel statistics to assist communications.
no code implementations • 24 May 2022 • Arthur S. de Sena, Pedro H. J. Nardelli, Daniel B. da Costa, Petar Popovski, Constantinos B. Papadias
Rate-splitting multiple access (RSMA) has recently appeared as a powerful technique for improving the downlink performance of multiple-input multiple-output (MIMO) systems.
no code implementations • 23 May 2022 • Roberto Pereira, Anay Ajit Deshpande, Cristian J. Vaca-Rubio, Xavier Mestre, Andrea Zanella, David Gregoratti, Elisabeth de Carvalho, Petar Popovski
Hierarchical Rate Splitting (HRS) schemes proposed in recent years have shown to provide significant improvements in exploiting spatial diversity in wireless networks and provide high throughput for all users while minimising interference among them.
no code implementations • 17 May 2022 • Cristian J. Vaca-Rubio, Dariush Salami, Petar Popovski, Elisabeth de Carvalho, Zheng-Hua Tan, Stephan Sigg
Since electromagnetic signals are omnipresent, Radio Frequency (RF)-sensing has the potential to become a universal sensing mechanism with applications in localization, smart-home, retail, gesture recognition, intrusion detection, etc.
no code implementations • 31 Mar 2022 • Wali Ullah Khan, Eva Lagunas, Zain Ali, Muhammad Awais Javed, Manzoor Ahmed, Symeon Chatzinotas, Björn Ottersten, Petar Popovski
Unmanned Aerial Vehicles (UAVs) are an important component of next-generation wireless networks that can assist in high data rate communications and provide enhanced coverage. Their high mobility and aerial nature offer deployment flexibility and low-cost infrastructure support to existing cellular networks and provide many applications that rely on mobile wireless communications.
no code implementations • 10 Mar 2022 • Shashi Raj Pandey, Lam D. Nguyen, Petar Popovski
In a Federated Learning (FL) setup, a number of devices contribute to the training of a common model.
no code implementations • 27 Jan 2022 • Suraj Suman, Cedomir Stefanovic, Strahinja Došen, Petar Popovski
This is a critical link tasked with a timely and reliable transfer of potentially significant amount of data from the multitude of sensors.
no code implementations • 16 Dec 2021 • Maik Röper, Bho Matthiesen, Dirk Wübben, Petar Popovski, Armin Dekorsy
In this paper, we propose a distributed linear precoding scheme and a GS equalizer relying on local position information.
no code implementations • 6 Dec 2021 • Lam Duc Nguyen, Shashi Raj Pandey, Soret Beatriz, Arne Broering, Petar Popovski
An emerging paradigm in ML is a federated approach where the learning model is delivered to a group of heterogeneous agents partially, allowing agents to train the model locally with their own data.
no code implementations • 24 Nov 2021 • Nasrin Razmi, Bho Matthiesen, Armin Dekorsy, Petar Popovski
Mega-constellations of small-size Low Earth Orbit (LEO) satellites are currently planned and deployed by various private and public entities.
no code implementations • 4 Oct 2021 • Beatriz Soret, Lam D. Nguyen, Jan Seeger, Arne Bröring, Chaouki Ben Issaid, Sumudu Samarakoon, Anis El Gabli, Vivek Kulkarni, Mehdi Bennis, Petar Popovski
An Intelligent IoT Environment (iIoTe) is comprised of heterogeneous devices that can collaboratively execute semi-autonomous IoT applications, examples of which include highly automated manufacturing cells or autonomously interacting harvesting machines.
no code implementations • 24 Sep 2021 • Anay Ajit Deshpande, Cristian J. Vaca-Rubio, Salman Mohebi, Dariush Salami, Elisabeth de Carvalho, Petar Popovski, Stephan Sigg, Michele Zorzi, Andrea Zanella
The usage of Reconfigurable Intelligent Surfaces (RIS) in conjunction with Unmanned Ariel Vehicles (UAVs) is being investigated as a way to provide energy-efficient communication to ground users in dense urban areas.
no code implementations • 14 Sep 2021 • Dariush Salami, Ramin Hasibi, Sameera Palipana, Petar Popovski, Tom Michoel, Stephan Sigg
To tackle this issue, we developed Tesla, a Message Passing Neural Network (MPNN) graph convolution approach for mmWave radar point clouds.
no code implementations • 3 Sep 2021 • Nasrin Razmi, Bho Matthiesen, Armin Dekorsy, Petar Popovski
In Low Earth Orbit (LEO) mega constellations, there are relevant use cases, such as inference based on satellite imaging, in which a large number of satellites collaboratively train a machine learning model without sharing their local datasets.
no code implementations • 5 Aug 2021 • Igor Donevski, Jimmy Jessen Nielsen, Petar Popovski
Thus, we propose a reactive method for the allocation of wireless resources, that happens dynamically each FL round, and is based on each learner's contribution to the general model.
no code implementations • 28 Jun 2021 • Gui Zhou, Cunhua Pan, Hong Ren, Petar Popovski, A. Lee Swindlehurst
In the first coherence block, we propose a two-phase channel estimation method, in which the cascaded channel of one typical user is estimated in Phase I based on the linear correlation among cascaded paths, while the cascaded channels of other users are estimated in Phase II by utilizing the partial CSI of the common base station (BS)-RIS channel obtained in Phase I.
no code implementations • 1 Jun 2021 • Pedro M. de Sant Ana, Nikolaj Marchenko, Petar Popovski, Beatriz Soret
Joint design of control and communication in Wireless Networked Control Systems (WNCS) is a promising approach for future wireless industrial applications.
no code implementations • 27 May 2021 • Arthur S. de Sena, Pedro H. J. Nardelli, Daniel B. da Costa, F. Rafael M. Lima, Liang Yang, Petar Popovski, Zhiguo Ding, Constantinos B. Papadias
In this paper, the appealing features of a dual-polarized intelligent reflecting surface (IRS) are exploited to improve the performance of dual-polarized massive multiple-input multiple-output (MIMO) with non-orthogonal multiple access (NOMA) under imperfect successive interference cancellation (SIC).
no code implementations • 27 Mar 2021 • Nithin Babu, Constantinos B. Papadias, Petar Popovski
In this letter, we propose an energy-efficient 3-dimensional placement of multiple aerial access points (AAPs), in the desired area, acting as flying base stations for uplink communication from a set of ground user equipment (UE).
no code implementations • 9 Mar 2021 • Elif Uysal, Onur Kaya, Anthony Ephremides, James Gross, Marian Codreanu, Petar Popovski, Mohamad Assaad, Gianluigi Liva, Andrea Munari, Touraj Soleymani, Beatriz Soret, Karl Henrik Johansson
We present our vision for a departure from the established way of architecting and assessing communication networks, by incorporating the semantics of information for communications and control in networked systems.
no code implementations • 15 Feb 2021 • Christina Chaccour, Mehdi Naderi Soorki, Walid Saad, Mehdi Bennis, Petar Popovski, Merouane Debbah
Based on these fundamentals, we characterize seven unique defining features of THz wireless systems: 1) Quasi-opticality of the band, 2) THz-tailored wireless architectures, 3) Synergy with lower frequency bands, 4) Joint sensing and communication systems, 5) PHY-layer procedures, 6) Spectrum access techniques, and 7) Real-time network optimization.
Information Theory Information Theory
2 code implementations • 1 Feb 2021 • Emil Björnson, Henk Wymeersch, Bho Matthiesen, Petar Popovski, Luca Sanguinetti, Elisabeth de Carvalho
We will provide the formulas and derivations that are required to understand and analyze RIS-aided systems using signal processing, and exemplify how they can be utilized for improved communication, localization, and sensing.
no code implementations • 19 Jan 2021 • Siddharth Chandak, Federico Chiariotti, Petar Popovski
As the use of Internet of Things (IoT) devices for monitoring purposes becomes ubiquitous, the efficiency of sensor communication is a major issue for the modern Internet.
Networking and Internet Architecture 94A05 (Primary), 94B35, 62M05 (Secondary) E.4; H.1.1
no code implementations • 22 Dec 2020 • Anders E. Kalør, Petar Popovski
In this paper, we consider the problem of minimizing the AoI in a system in which a set of sources are observed by multiple sensors in a many-to-many relationship, and the probability that a sensor observes a source depends on the state of the source.
Information Theory Networking and Internet Architecture Information Theory
no code implementations • 7 Dec 2020 • Arthur S. de Sena, Pedro H. J. Nardelli, Daniel B. da Costa, F. Rafael M. Lima, Liang Yang, Petar Popovski, Zhiguo Ding, Constantinos B. Papadias
By considering the downlink of a multi-cluster scenario, the IRSs assist the base station (BS) to multiplex subsets of users in the polarization domain.
no code implementations • 16 Nov 2020 • Cristian J. Vaca-Rubio, Pablo Ramirez-Espinosa, Kimmo Kansanen, Zheng-Hua Tan, Elisabeth de Carvalho, Petar Popovski
By treating an LIS as a radio image of the environment relying on the received signal power, we develop techniques to sense the environment, by leveraging the tools of image processing and machine learning.
no code implementations • 13 Nov 2020 • Petar Šolić, Ante Lojić Kapetanović, Tomislav Županović, Ivo Kovačević, Toni Perković, Petar Popovski
Based on the type of the user, data can be viewed-only, controlled or the top user can register the sensor to the system.
no code implementations • 26 Oct 2020 • Dick Carrillo, Lam Duc Nguyen, Pedro H. J. Nardelli, Evangelos Pournaras, Plinio Morita, Demóstenes Z. Rodríguez, Merim Dzaferagic, Harun Siljak, Alexander Jung, Laurent Hébert-Dufresne, Irene Macaluso, Mehar Ullah, Gustavo Fraidenraich, Petar Popovski
In this sense, we expect active participation of empowered citizens to supplement the more usual top-down management of epidemics.
Distributed, Parallel, and Cluster Computing
no code implementations • 9 Oct 2020 • Enes Krijestorac, Ghaith Hattab, Petar Popovski, Danijela Cabric
The objective is to find an assignment of BSs to multiplexing bands in order to maximize the packet decoding probability (PDP).
no code implementations • 5 Sep 2020 • José Carlos Marinello, Taufik Abrão, Abolfazl Amiri, Elisabeth de Carvalho, Petar Popovski
We consider the recently proposed extra-large scale massive multiple-input multiple-output (XL-MIMO) systems, with some hundreds of antennas serving a smaller number of users.
no code implementations • 1 Jul 2020 • Daniel Gutierrez-Rojas, Pedro H. J. Nardelli, Goncalo Mendes, Petar Popovski
The dominance of distributed energy resources in microgrids and the associated weather dependency require flexible protection.
no code implementations • 11 Jun 2020 • Cristian J. Vaca-Rubio, Pablo Ramirez-Espinosa, Robin Jess Williams, Kimmo Kansanen, Zheng-Hua Tan, Elisabeth de Carvalho, Petar Popovski
One of the beyond-5G developments that is often highlighted is the integration of wireless communication and radio sensing.
no code implementations • 16 May 2020 • Israel Leyva-Mayorga, Beatriz Soret, Petar Popovski
With numerous ongoing deployments owned by private companies and startups, dense satellite constellations deployed in low Earth orbit (LEO) will play a major role in the near future of wireless communications.
Networking and Internet Architecture
no code implementations • 14 Apr 2020 • Lam D. Nguyen, Anders E. Kalør, Israel Leyva-Mayorga, Petar Popovski
The data collected from Internet of Things (IoT) devices on various emissions or pollution, can have a significant economic value for the stakeholders.
Cryptography and Security Distributed, Parallel, and Cluster Computing
no code implementations • 14 Apr 2020 • Lam D. Nguyen, Israel Leyva-Mayorga, Petar Popovski
In our scheme, we classify transactions into two types: 1) global transactions, which must be processed by global blockchain nodes and 2) local transactions, which can be processed locally by entities called witnesses.
Networking and Internet Architecture Systems and Control Systems and Control
1 code implementation • 10 Apr 2020 • Federico Chiariotti, Olga Vikhrova, Beatriz Soret, Petar Popovski
Age of Information is a critical metric for several Internet of Things (IoT) applications, where sensors keep track of the environment by sending updates that need to be as fresh as possible.
Networking and Internet Architecture 60K25, 68M20 C.2.2; G.3
no code implementations • 4 Feb 2020 • René Brandborg Sørensen, Jimmy Jessen Nielsen, Petar Popovski
One of the central problems in massive Internet of Things (IoT) deployments is the monitoring of the status of a massive number of links.
1 code implementation • 31 Jan 2020 • Victor Croisfelt Rodrigues, Abolfazl Amiri, Taufik Abrão, Elisabeth de Carvalho, Petar Popovski
In this paper, the zero-forcing and regularized zero-forcing schemes operating in crowded extra-large MIMO (XL-MIMO) scenarios with a fixed number of subarrays have been emulated using the randomized Kaczmarz algorithm (rKA).
no code implementations • 30 Jan 2020 • Ghaith Hattab, Petar Popovski, Danijela Cabric
Ultra-narrowband (UNB) communications has become a signature feature for many emerging low-power wide-area (LPWA) networks.
no code implementations • 22 Jan 2020 • Ivana Nikoloska, Josefine Holm, Anders Kalør, Petar Popovski, Nikola Zlatanov
We propose a data filtering scheme employed by the IoT nodes, which we refer to as distributed importance filtering in order to filter out redundant data samples already at the IoT nodes.
1 code implementation • 7 Sep 2017 • Amin Azari, Petar Popovski, Guowang Miao, Cedomir Stefanovic
Radio access management plays a vital role in delay and energy consumption of connected devices.
Information Theory Information Theory
1 code implementation • 3 May 2017 • Pietro Danzi, Marko Angjelichinoski, Čedomir Stefanović, Petar Popovski
Residential microgrids (MGs) may host a large number of Distributed Energy Resources (DERs).
Multiagent Systems
no code implementations • 14 Sep 2016 • Marko Angjelichinoski, Anna Scaglione, Petar Popovski, Cedomir Stefanovic
We propose a decentralized Maximum Likelihood solution for estimating the stochastic renewable power generation and demand in single bus Direct Current (DC) MicroGrids (MGs), with high penetration of droop controlled power electronic converters.
1 code implementation • 14 Apr 2016 • Emil Björnson, Elisabeth de Carvalho, Jesper H. Sørensen, Erik G. Larsson, Petar Popovski
The Massive MIMO (multiple-input multiple-output) technology has great potential to manage the rapid growth of wireless data traffic.
Information Theory Networking and Internet Architecture Information Theory