Search Results - "Figueiredo, Felipe A P de"
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A Literature Survey on AI-Aided Beamforming and Beam Management for 5G and 6G Systems
Published in Sensors (Basel, Switzerland) (28-04-2023)“…Modern wireless communication systems rely heavily on multiple antennas and their corresponding signal processing to achieve optimal performance. As 5G and 6G…”
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Secrecy Analysis of a Mu-MIMO LIS-Aided Communication Systems under Nakagami- m Fading Channels
Published in Sensors (Basel, Switzerland) (23-05-2024)“…This study evaluates the performance of large intelligent surface (LIS) technology in the context of a multi-user MIMO mobile communication system (Mu-MIMO)…”
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Simultaneous Estimation of Azimuth and Elevation Angles Using a Decision Tree-Based Method
Published in Sensors (Basel, Switzerland) (01-08-2023)“…This study addresses the problem of accurately predicting azimuth and elevation angles of signals impinging on an antenna array employing Machine Learning…”
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Machine-learning-aided method for optimizing beam selection and update period in 5G networks and beyond
Published in Scientific reports (29-08-2024)“…Finding the optimal beam pair and update time in 5G systems operating at mmWave frequencies is time-intensive and resource-demanding. This intricate procedure…”
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Optimization of Magnetoplasmonic ε -Near-Zero Nanostructures Using a Genetic Algorithm
Published in Sensors (Basel, Switzerland) (03-08-2022)“…Magnetoplasmonic permittivity-near-zero (ε-near-zero) nanostructures hold promise for novel highly integrated (bio)sensing devices. These platforms merge the…”
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Unlocking the Power of Reconfigurable Intelligent Surfaces: From Wireless Communication to Energy Efficiency and Beyond
Published in Applied sciences (01-11-2023)“…Reconfigurable Intelligent Surfaces (RISs) are a class of metamaterials that have gained significant attention in recent years due to their potential to…”
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Capacity Bounds for Dense Massive MIMO in a Line-of-Sight Propagation Environment
Published in Sensors (Basel, Switzerland) (17-01-2020)“…The use of large-scale antenna arrays grants considerable benefits in energy and spectral efficiency to wireless systems due to spatial resolution and array…”
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Secrecy Analysis and Error Probability of LIS-Aided Communication Systems under Nakagami-m Fading
Published in Entropy (Basel, Switzerland) (30-09-2021)“…Large intelligent surfaces (LIS) are a new trend to achieve higher spectral efficiency and signal-to-noise ratio in mobile communications. For this reason,…”
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9
Bit Error Probability for Large Intelligent Surfaces Under Double-Nakagami Fading Channels
Published in IEEE open journal of the Communications Society (2020)“…In this work, we investigate the probability distribution function of the channel fading between a base station, an array of intelligent reflecting elements,…”
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10
Sum-Rate Channel Capacity for Line-of-Sight Models
Published in Sensors (Basel, Switzerland) (01-03-2021)“…This work considers a base station equipped with an -antenna uniform linear array and users under line-of-sight conditions. As a result, one can derive an…”
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11
A Baseband Wireless Spectrum Hypervisor for Multiplexing Concurrent OFDM Signals
Published in Sensors (Basel, Switzerland) (17-02-2020)“…The next generation of wireless and mobile networks will have to handle a significant increase in traffic load compared to the current ones. This situation…”
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12
Large Intelligent Surfaces With Discrete Set of Phase-Shifts Communicating Through Double-Rayleigh Fading Channels
Published in IEEE access (2021)“…Despite many studies already published on large intelligent surfaces (LIS), there are still some gaps in mathematical models in the face of possible scenarios…”
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13
Large Intelligent Surfaces Communicating Through Massive MIMO Rayleigh Fading Channels
Published in Sensors (Basel, Switzerland) (22-11-2020)“…Large intelligent surfaces (LIS) promises not only to improve the signal to noise ratio, and spectral efficiency but also to reduce the energy consumption…”
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14
Deep Learning-Based Spectrum Prediction Collision Avoidance for Hybrid Wireless Environments
Published in IEEE access (2019)“…With a growing number of connected devices relying on the Industrial, Scientific, and Medical radio bands for communication, spectrum scarcity is one of the…”
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15
Artificial intelligence for channel estimation in multicarrier systems for B5G/6G communications: a survey
Published in EURASIP journal on wireless communications and networking (02-12-2022)“…Multicarrier modulation allows for deploying wideband systems resilient to multipath fading channels, impulsive noise, and intersymbol interference compared to…”
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A Dynamic Distributed Multi-Channel TDMA Slot Management Protocol for Ad Hoc Networks
Published in IEEE access (2021)“…With the emergence of new technologies and standards for wireless communications and an increase in application and user requirements, the number and density…”
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Multi-Agent Deep Learning for Multi-Channel Access in Slotted Wireless Networks
Published in IEEE access (2020)“…As the number of devices connected to the internet and the amount of data they generate increases, the wireless spectrum is becoming an essential and scarce…”
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18
Channel estimation for massive MIMO TDD systems assuming pilot contamination and flat fading
Published in EURASIP journal on wireless communications and networking (15-01-2018)“…Channel estimation is crucial for massive massive multiple-input multiple-output (MIMO) systems to scale up multi-user (MU) MIMO, providing great improvement…”
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Multiple-Antenna Weibull-Fading Wireless Communications Enhanced by Reconfigurable Intelligent Surfaces
Published in IEEE access (2023)“…The Reconfigurable Intelligent Surface (RIS) has recently gained traction as a promising, enabling technology for future sixth-generation (6G) mobile networks…”
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Channel Estimation for Massive MIMO TDD Systems Assuming Pilot Contamination and Frequency Selective Fading
Published in IEEE access (01-01-2017)“…Channel estimation is crucial for massive multiple-input multiple-output (MIMO) systems to scale up multi-user MIMO, providing significant improvement in…”
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