no code implementations • 16 Apr 2024 • Georgios Mylonopoulos, Behrooz Makki, Stefano Buzzi, Gábor Fodor
6G wireless networks will integrate communication, computing, localization, and sensing capabilities while meeting the needs of high reliability and trustworthiness.
no code implementations • 15 Feb 2024 • Diego A. Sousa, Fco. Rafael M. Lima, Victor F. Monteiro, Tarcisio F. Maciel, Behrooz Makki
NCRs, which have been standardized in 3rd generation partnership project Release 18, are radio frequency repeaters with beamforming capability controlled by the network through side control information.
no code implementations • 4 Feb 2024 • Georgios Mylonopoulos, Behrooz Makki, Stefano Buzzi, Gábor Fodor
This letter studies the problem of jointly detecting active user equipments (UEs) and estimating their location in the near field, wherein the base station (BS) is unaware of the number of active (or inactive) UEs and their positions.
no code implementations • 10 Dec 2023 • Praveen Kumar Singya, Behrooz Makki, Antonio D'Errico, Mohamed-Slim Alouini
Moving towards $6^{\text{th}}$ generation (6G), backhaul networks require significant improvements to support new use-cases with restricted joint capacity and availability requirements.
no code implementations • 11 Sep 2023 • Sneha Madhusudan, Charitha Madapatha, Behrooz Makki, Hao Guo, Tommy Svensson
To that end, we investigate a wireless transport network architecture that integrates beamforming and coded-caching strategies.
no code implementations • 29 Jun 2023 • Wilker de O. Feitosa, Igor M. Guerreiro, Fco. Rodrigo P. Cavalcanti, Tarcisio F. Maciel, Maria Clara R. Lobão, Fazal-E-Asim, Behrooz Makki, Gábor Fodor
This work investigates interference mitigation techniques in multi-user multiple input multiple output (MU-MIMO) Intelligent Reflecting Surface (IRS)-aided networks, focusing on the base station end.
no code implementations • 21 Jun 2023 • Kenneth B. A. Benício, André L. F. de Almeida, Bruno Sokal, Fazal-E-Asim, Behrooz Makki, Gabor Fodor
This paper proposes a tensor-based parametric modeling and estimation framework in multiple-input multiple-output (MIMO) systems assisted by intelligent reflecting surfaces (IRSs).
no code implementations • 20 Jun 2023 • Gabriel C. M. da Silva, Erik R. B. Falcão, Victor F. Monteiro, Darlan C. Moreira, Diego A. Sousa, Tarcisio F. Maciel, Fco. Rafael M. Lima, Behrooz Makki
Heterogeneous networks have been studied as one of the enablers of network densification.
no code implementations • 24 May 2023 • Yuri S. Ribeiro, Fazal E-Asim, André L. F de Almeida, Behrooz Makki, Gabor Fodor
In this letter, we consider an intelligent reflecting surface (IRS)-assisted multiple input multiple output (MIMO) communication and we optimize the joint active and passive beamforming by exploiting the geometrical structure of the propagation channels.
no code implementations • 17 May 2023 • Kenneth B. A. Benicio, André L. F. de Almeida, Bruno Sokal, Fazal-E-Asim, Behrooz Makki, Gábor Fodor
This letter proposes a model for symbol detection in the uplink of IRS-assisted networks in the presence of channel aging.
no code implementations • 7 May 2023 • Fazal-E-Asim, André L. F. de Almeida, Bruno Sokal, Behrooz Makki, Gábor Fodor
The tradeoffs between performance and complexity offered by the proposed methods are discussed and numerically assessed.
no code implementations • 23 Apr 2023 • Ruiqi Wang, Yiming Yang, Behrooz Makki, Atif Shamim
The measurement results demonstrate that the proposed RIS could maintain a 3 dB peak gain variation bandwidth among various array configurations within 22. 5 to 29. 5 GHz (26. 9%) and with a beam scanning capability of 50{\deg}, making this design a good candidate for 5G mm-wave applications.
no code implementations • 12 Apr 2023 • Fazal-E-Asim, Bruno Sokal, André L. F. de Almeida, Behrooz Makki, Gábor Fodor
This letter proposes a high-resolution channel estimation for reconfigurable intelligent surface (RIS)-assisted communication networks.
no code implementations • 4 Apr 2023 • Praveen Kumar Singya, Behrooz Makki, Antonio D'Errico, Mohamed-Slim Alouini
We consider different deployments of the THz and FSO networks and consider both switching and combining methods between the hybrid FSO/THz links.
no code implementations • 7 Feb 2023 • Yiming Yang, Ruiqi Wang, Mohammad Vaseem, Behrooz Makki, Atif Shamim
In this paper, we propose a via-less fully screen-printed reconfigurable intelligent surface which can establish a second line-of-sight communication from 23. 5GHz to 29. 5GHz.
no code implementations • 11 Oct 2022 • Charitha Madapatha, Behrooz Makki, Hao Guo, Tommy Svensson
Due to the sensitivity of the backhaul links with high rate/reliability demands, proper network planning is needed to make the IAB network performing appropriately and as good as possible.
no code implementations • 29 Jun 2022 • Victor F. Monteiro, Fco. Rafael M. Lima, Darlan C. Moreira, Diego A. Sousa, Tarcisio F. Maciel, Behrooz Makki, Hans Hannu
In this context, different of other works from the literature, the present work overviews the basis for the deployment of mIAB by presenting: 1) the current status of IAB standardization in the fifth generation (5G) new radio (NR); 2) a new taxonomy for state-of-the-art works regarding fixed IAB and mIAB; 3) an extensive performance analysis of mIAB based on simulation results; and 4) open challenges and potential future prospects of mIAB.
no code implementations • 10 Jun 2022 • Bruno Sokal, Paulo R. B. Gomes, André L. F. de Almeida, Behrooz Makki, Gabor Fodor
We show that the proposed low-rank models drastically reduce the required feedback requirements associated with the BS-IRS control links.
no code implementations • 7 Jun 2022 • Paulo R. B. Gomes, Gilderlan T. de Araújo, Bruno Sokal, André L. F. de Almeida, Behrooz Makki, Gábor Fodor
Furthermore, the identifiability and computational complexity of the proposed algorithm are analyzed, and we study the effect of different imperfections on the channel estimation quality.
no code implementations • 24 May 2022 • Bruno Sokal, Paulo R. B. Gomes, André L. F. de Almeida, Behrooz Makki, Gabor Fodor
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.
no code implementations • 27 Apr 2022 • Victor Farias Monteiro, Fco. Rafael Marques Lima, Darlan Cavalcante Moreira, Diego Aguiar Sousa, Tarcisio Ferreira Maciel, Behrooz Makki, Ritesh Shreevastav, Hans Hannu
As in every new technology, performance assessment and evaluation of the impact of interference is of interest for industry and academia.
no code implementations • 18 Apr 2022 • Praveen Kumar Singya, Behrooz Makki, Antonio D'Errico, Mohamed-Slim Alouini
To minimize the effect of back-and-forth switching, soft switching method is introduced at the access point (AP) to select the signal coming through the hybrid FSO/THz link, and a comparison with hard switching method is presented.
no code implementations • 4 Jun 2021 • Chao Fang, Charitha Madapatha, Behrooz Makki, Tommy Svensson
Integrated access and backhaul (IAB) networks have the potential to provide high data rate in both access and backhaul networks by sharing the same spectrum.
no code implementations • 14 Feb 2021 • Charitha Madapatha, Behrooz Makki, Ajmal Muhammad, Erik Dahlman, Mohamed-Slim Alouini, Tommy Svensson
In this paper, we study the problem of topology optimization and routing in integrated access and backhaul (IAB) networks, as one of the promising techniques for evolving 5G networks.
no code implementations • 18 Dec 2020 • Hao Guo, Behrooz Makki, Dinh-Thuy Phan-Huy, Erik Dahlman, Mohamed-Slim Alouini, Tommy Svensson
In future wireless systems, a large number of users may access the networks via moving relays (MRs) installed on top of vehicles.
Information Theory Signal Processing Information Theory
no code implementations • 31 Aug 2020 • Hao Guo, Behrooz Makki, Tommy Svensson
We use the fundamental results on the achievable rate of finite block-length codes to study the system throughput and error probability in the presence of short packets.
Information Theory Signal Processing Information Theory
no code implementations • 17 Aug 2020 • Nandana Rajatheva, Italo Atzeni, Simon Bicais, Emil Bjornson, Andre Bourdoux, Stefano Buzzi, Carmen D'Andrea, Jean-Baptiste Dore, Serhat Erkucuk, Manuel Fuentes, Ke Guan, Yuzhou Hu, Xiaojing Huang, Jari Hulkkonen, Josep Miquel Jornet, Marcos Katz, Behrooz Makki, Rickard Nilsson, Erdal Panayirci, Khaled Rabie, Nuwanthika Rajapaksha, MohammadJavad Salehi, Hadi Sarieddeen, Shahriar Shahabuddin, Tommy Svensson, Oskari Tervo, Antti Tolli, Qingqing Wu, Wen Xu
Several categories of enablers at the infrastructure, spectrum, and protocol/algorithmic levels are required to realize the intended broadband connectivity goals in 6G.
no code implementations • 13 Jan 2020 • Chao Fang, Behrooz Makki, Jingya Li, Tommy Svensson
Considering joint transmissions and BS silence strategy, we propose hybrid precoding algorithms which minimize the sum power consumption of the base stations (BSs), for both fully- and partially-connected hybrid precoding (FHP and PHP, respectively) schemes, for single-carrier and orthogonal frequency-division multiplexing systems.