Search Results for author: Behrooz Makki

Found 28 papers, 0 papers with code

Extended Automatic Repeat Request For Integrated Sensing And Communication Networks

no code implementations16 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.

Beam Squinting Compensation: An NCR-Assisted Scenario

no code implementations15 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.

Joint User Detection and Localization in Near-Field Using Reconfigurable Intelligent Surfaces

no code implementations4 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.

Action Detection Activity Detection

Multi-hop Sub-THz-FSO: A Technique for High-rate Uninterrupted Backhauling in 6G

no code implementations10 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.

Beamforming in Wireless Coded-Caching Systems

no code implementations11 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.

Interference mitigation with block diagonalization for IRS-aided MU-MIMO communications

no code implementations29 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.

Tensor-based modeling/estimation of static channels in IRS-assisted MIMO systems

no code implementations21 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).

Low-Complexity Joint Active and Passive Beamforming Design for IRS-Assisted MIMO

no code implementations24 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.

Tensor-Based Channel Estimation and Data-Aided Tracking in IRS-Assisted MIMO Systems

no code implementations17 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.

Two-Dimensional Channel Parameter Estimation for IRS-Assisted Networks

no code implementations7 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.

Vocal Bursts Valence Prediction

A Wideband Reconfigurable Intelligent Surface for 5G Millimeter-Wave Applications

no code implementations23 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.

Tensor-Based High-Resolution Channel Estimation for RIS-Assisted Communications

no code implementations12 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.

Vocal Bursts Intensity Prediction

High-rate Reliable Communication using Multi-hop and Mesh THz/FSO Networks

no code implementations4 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.

A Via-less Fully Screen-Printed Reconfigurable Intelligent Surface for 5G Millimeter Wave Communication

no code implementations7 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.

Constrained Deployment Optimization in Integrated Access and Backhaul Networks

no code implementations11 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.

Blocking Management

Paving the Way Towards Mobile IAB: Problems, Solutions and Challenges

no code implementations29 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.

Tensor-Based Channel Estimation for RIS-Assisted Networks Operating Under Imperfections

no code implementations7 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.

IRS Phase-Shift Feedback Overhead-Aware Model Based on Rank-One Tensor Approximation

no code implementations24 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.

TDD frame design for interference handling in mobile IAB networks

no code implementations27 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.

Hybrid FSO/THz-based Backhaul Network for mmWave Terrestrial Communication

no code implementations18 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.

Joint Scheduling and Throughput Maximization in Self-backhauled Millimeter Wave Cellular Networks

no code implementations4 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.

Scheduling

On Topology Optimization and Routing in Integrated Access and Backhaul Networks: A Genetic Algorithm-based Approach

no code implementations14 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.

Predictor Antenna: A Technique to Boost the Performance of Moving Relays

no code implementations18 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

Predictor Antennas for Moving Relays: Finite Block-length Analysis

no code implementations31 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

Hybrid Precoding in Cooperative Millimeter Wave Networks

no code implementations13 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.

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