Search Results - "Bartolomeu, F"

Harvest-Then-Cooperate: Wireless-Powered Cooperative Communications by Chen, He, Li, Yonghui, Luiz Rebelatto, Joao, Uchoa-Filho, Bartolomeu F., Vucetic, Branka

“…In this paper, we consider a wireless-powered cooperative communication network consisting of one hybrid access-point (AP), one source, and one relay. In…”
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Intelligent Reflecting Surfaces Beamforming Optimization with Statistical Channel Knowledge by Souto, Victoria Dala Pegorara, Souza, Richard Demo, Uchôa-Filho, Bartolomeu F, Li, Yonghui

“…Intelligent Reflecting Surfaces (IRSs) are emerging as an effective technology capable of improving the spectral and energy efficiency of future wireless…”
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User Activity Detection and Channel Estimation in Frequency-Selective Faded Grant-Free Access by Scharf, Ana Luiza, Uchoa-Filho, Bartolomeu F., Le Ruyet, Didier

“…In grant-free multiple access, active users transmit without requesting permission and the base station must perform user activity detection (UAD), a problem…”
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Time-Switching Uplink Network-Coded Cooperative Communication With Downlink Energy Transfer by Moritz, Guilherme Luiz, Rebelatto, Joao Luiz, Demo Souza, Richard, Uchoa-Filho, Bartolomeu F., Yonghui Li

“…In this work, we consider a multiuser cooperative wireless network where the energy-constrained sources have independent information to transmit to a common…”
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316L stainless steel mechanical and tribological behavior—A comparison between selective laser melting, hot pressing and conventional casting by Bartolomeu, F., Buciumeanu, M., Pinto, E., Alves, N., Carvalho, O., Silva, F.S., Miranda, G.

“…This work presents a comprehensive study on the influence of three different processing technologies (Selective Laser Melting, Hot Pressing and conventional…”
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Multiuser Cooperative Diversity Through Network Coding Based on Classical Coding Theory by Rebelatto, Joao Luiz, Uchoa-Filho, Bartolomeu F., Yonghui Li, Vucetic, Branka

“…In this paper, we propose and analyze a generalized construction of distributed network codes for a network consisting of M users sending independent…”
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Predicting the output dimensions, porosity and elastic modulus of additive manufactured biomaterial structures targeting orthopedic implants by Bartolomeu, F., Fonseca, J., Peixinho, N., Alves, N., Gasik, M., Silva, F.S., Miranda, G.

“…SLM accuracy for fabricating porous materials is a noteworthy hindrance when aiming to obtain biomaterial cellular structures owing precise geometry, porosity,…”
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Predictive models for physical and mechanical properties of Ti6Al4V produced by Selective Laser Melting by Bartolomeu, F., Faria, S., Carvalho, O., Pinto, E., Alves, N., Silva, F.S., Miranda, G.

“…The properties of parts produced by Selective Laser Melting (SLM) are highly influenced by the processing parameters. The calculation of the energy density is…”
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Predictive models for physical and mechanical properties of 316L stainless steel produced by selective laser melting by Miranda, G., Faria, S., Bartolomeu, F., Pinto, E., Madeira, S., Mateus, A., Carreira, P., Alves, N., Silva, F.S., Carvalho, O.

“…Selective Laser Melting (SLM) processing parameters are known to greatly influence 316L stainless steel final properties. A simple energy density calculation…”
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Contribution of limbs' actions to the four competitive swimming strokes: a nonlinear approach by Bartolomeu, Raul F, Costa, Mário J, Barbosa, Tiago M

“…The aim of our study was to assess the effect of the limbs' actions on the nonlinear properties of the four competitive swimming strokes. Forty-nine swimmers…”
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Design of Ti6Al4V-HA composites produced by hot pressing for biomedical applications by Miranda, G., Araújo, A., Bartolomeu, F., Buciumeanu, M., Carvalho, O., Souza, J.C.M., Silva, F.S., Henriques, B.

“…In order to enhance osteointegration, prostheses surfaces are usually coated with bioactive materials like hydroxyapatite (HA), material found in teeth and…”
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On the Signal-to-Noise Ratio Wall of Energy Detection in Spectrum Sensing by Costa, Lucas Dos Santos, Guimaraes, Dayan Adionel, Uchoa-Filho, Bartolomeu F.

“…In this paper, a comprehensive analysis of the signal-to-noise ratio wall (SNRw) of cognitive radio (CR)-based non-cooperative spectrum sensing (nCSS) and…”
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Low-Complexity Detection for Multidimensional Codebooks Over Fading Channels by Inacio, Juliana Camilo, Uchoa-Filho, Bartolomeu F., Le Ruyet, Didier

“…Signal space diversity (SSD) introduced by Boutros and Viterbo tremendously improves the error performance over fading channels without any power or bandwidth…”
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Effect of laser surface texturing on primary stability and surface properties of zirconia implants by Moura, C.G., Pereira, R., Buciumeanu, M., Carvalho, O., Bartolomeu, F., Nascimento, R., Silva, F.S.

“…The aim of this study was to investigate the influence of different laser surface texturing parameters on static and dynamic coefficient of friction values of…”
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Engineering the elastic modulus of NiTi cellular structures fabricated by selective laser melting by Bartolomeu, F., Costa, M.M., Alves, N., Miranda, G., Silva, F.S.

“…Nickel-titanium (NiTi) cellular structures are a very promising solution to some issues related to orthopaedic implant failure. These structures can be…”
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Influence of Noise Uncertainty Source and Model on the SNR Wall of Energy Detection by Costa, Lucas dos Santos, Adionel Guimaraes, Dayan, Ucho-Filho, Bartolomeu F.

“…Recently, we conducted a comprehensive analysis of energy detection (ED) signal-to-noise ratio wall (SNRw) due to noise uncertainty (NU) in cognitive-radio…”
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Full Diversity Multidimensional Codebook Design for Fading Channels: The Combinatorial Approach by Inacio, Juliana Camilo, Uchoa-Filho, Bartolomeu F., Le Ruyet, Didier, Montejo-Sanchez, Samuel

“…Previous transmission techniques for fading channels that exploit signal space diversity (SSD) are based on rotation or precoding of an original signal…”
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Multi-material NiTi-PEEK hybrid cellular structures by Selective Laser Melting and Hot Pressing: Tribological characterization by Costa, M.M., Bartolomeu, F., Palmeiro, J., Guimarães, B., Alves, N., Miranda, G., Silva, F.S.

“…In this study, a multi-material NiTi-PEEK cellular structured solution was designed, produced and characterized targeting orthopedic applications. For that…”
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Implant surface design for improved implant stability – A study on Ti6Al4V dense and cellular structures produced by Selective Laser Melting by Bartolomeu, F., Costa, M.M., Gomes, J.R., Alves, N., Abreu, C.S., Silva, F.S., Miranda, G.

“…Focusing on implant surface design, aiming to improve implant primary stability, SLM technology was explored to produce dense and cellular structured Ti6Al4V…”
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Multi-functional Ti6Al4V-CoCrMo implants fabricated by multi-material laser powder bed fusion technology: A disruptive material's design and manufacturing philosophy by Bartolomeu, F., Carvalho, O., Gasik, M., Silva, F.S.

“…A home-made 3D Multi-Material Laser Powder Bed Fusion (3DMMLPBF) technology was exploited to manufacture novel multi-material Ti6Al4V–CoCrMo parts. This…”
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