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Affichage de 5791 à 5800 sur 16261

Article dans une revue

Low Complexity Joint Blind Equalization and CFO Estimation for MC-CDMA System

Kais Bouallegue, Iyad Dayoub, M Gharbi, Kaïs Hassan, R. Masmoudi, A. Djebbar

Based on the orthogonality between the used and the unused spreading codes (excess codes) subspaces in one hand and on the restoration of guard interval redundancy of Multicarrier Code Division Multiple Access signal in other hand, we propose joint Carrier Frequency Offset and time domain equalizer…

Wireless Personal Communications, 2017, 92 (2), pp.315-331. ⟨10.1007/s11277-016-3545-9⟩. ⟨hal-03382946⟩

Communication dans un congrès

A text-dependent speaker-recognition system

Dany Ishac, Antoine Abche, Elie Karam, Georges Nassar, Dorothée Debavelaere-Callens

In this work, a voice recognition approach is developed and presented. It is a based on acquiring the signal of vocal cords' vibrations of a person using a piezoelectric transducer element attached on a collar wrapped around the neck. The recognition is then based on the vocal cords vibrations…

IEEE International Instrumentation and Measurement Technology Conference (I2MTC), May 2017, Torino, Italy. pp.147-152. ⟨hal-03280240⟩

Communication dans un congrès

The influence of the presence of a defect in a structure on the cross-correlation, application to the tubular structure

Karl Hourany, Youssef Zaatar, Farouk Benmeddour, Emmanuel Moulin, Dorothée Debavelaere-Callens, Jamal Assaad

The aim of this paper is to verify experimentally the constant possibility of performing a Structural Health Monitoring (SHM) in a medium by studying the ambient noise present therein. First, we will illustrate the equivalence between the Green's function and the cross-correlation, then we…

1st International Conference on Sensors, Networks, Smart and Emerging Technologies (SENSET), Sep 2017, Beriut, Lebanon. ⟨10.1109/SENSET.2017.8125066⟩. ⟨hal-03280236⟩

Article dans une revue

Complexity of the hot carrier relaxation in Si nanowires compared to bulk

Jing Li, Yann-Michel Niquet, Christophe Delerue

We investigate the relaxation of hot carriers by emission of phonons in bulk Si and Si nanowires (NWs) with an identical atomistic methodology. The phonon scattering is strongly enhanced in NWs. At high excitation energy, the carrier cooling is faster in NWs than in bulk, mainly due to the coupling…

Physical Review B, 2017, 95 (20), pp.205401. ⟨10.1103/PhysRevB.95.205401⟩. ⟨hal-02015399⟩

Article dans une revue

IEEE 802.11n Communications in the Presence of Frequency-Sweeping Interference Signals

Virginie Deniau, Christophe Gransart, Grecia Romero, Eric Pierre Simon, Joumana Farah

This paper presents an analysis of the impact of intentional electromagnetic (EM) interferences on the performance of Wi-Fi communications. The goal is to analyze the susceptibility of orthogonal frequency-division multiplexing (OFDM) signals and to understand how certain parameters of the…, Cet article présente une analyse de l'impact des interférences électromagnétiques intentionnelles (IEMI) sur la performance des communications Wi-Fi. L'objectif est d'analyser la susceptibilité des signaux de OFDM (Orthogonal Frequency Division Multiplex ) et de comprendre comment…

IEEE Transactions on Electromagnetic Compatibility, 2017, 9p. ⟨10.1109/TEMC.2017.2684428⟩. ⟨hal-01524700⟩

Article dans une revue

Iron minerals within specific microfossil morphospecies of the 1.88 Ga Gunflint Formation

Kevin Lepot, Ahmed Addad, Andrew H. Knoll, Jian Wang, David Troadec, Armand Béché, Emmanuelle J. Javaux

Problematic microfossils dominate the palaeontological record between the Great Oxidation Event 2.4 billion years ago (Ga) and the last Palaeoproterozoic iron formations, deposited 500-600 million years later. These fossils are often associated with iron-rich sedimentary rocks, but their affinities…

Nature Communications, 2017, 8, ⟨10.1038/ncomms14890⟩. ⟨insu-03688102⟩

Communication dans un congrès

Microstructuration of Silicon Surfaces Using Nanoporous Gold Electrodes

E Torralba, Mathieu Halbwax, T El Assimi, V. Magnin, Joseph Harari, Jean-Pierre Vilcot, Sylvain Le Gall, Raphaël Lachaume, C Cachet-Vivier, Stéphane Bastide

Etching is a key process in the fabrication of silicon (Si) microstructures that are essential for several component families used in microelectronics, photonics and photovoltaics, among others. A large variety of microstructuring technologies exists nowadays (e.g. wet/dry etchings based on photo/…

21st Topical Meeting of the International Society of Electrochemistry, ISE, Apr 2017, Szeged, Hungary. pp.31375 - 31375. ⟨hal-01537684⟩

Article dans une revue

A 4-fJ/spike artificial neuron in 65 nm CMOS technology

Ilias Sourikopoulos, Sara Hedayat, Christophe Loyez, Francois Danneville, Virginie Hoel, Eric Mercier, A. Cappy

As Moore's law reaches its end, traditional computing technology based on the Von Neumann architecture is facing fundamental limits. Among them is poor energy efficiency. This situation motivates the investigation of different processing information paradigms, such as the use of spiking neural…

Frontiers in Neuroscience, 2017, 11, pp.123. ⟨10.3389/fnins.2017.00123⟩. ⟨hal-03283312⟩

Article dans une revue

Pillar-type acoustic metasurface

Yabin Jin, Bernard Bonello, Rayisa P. Moiseyenko, Yan Pennec, Olga Boyko, Bahram Djafari-Rouhani

We theoretically investigate acoustic metasurfaces consisting of either a single pillar or a line of identical pillars on a thin plate, and we report on the dependence on the geometrical parameters of both the monopolar compressional and dipolar bending modes. We show that for specific dimensions…

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 96 (10), pp.104311 ⟨10.1103/PhysRevB.96.104311⟩. ⟨hal-01628355⟩

Communication dans un congrès

Quantitative determination of small dielectric and loss tangent contrasts in liquids

Hind Bakli, Kamel Haddadi

Accurate measurement of dielectric constant and loss tangent in liquid media in the frequency range 2-6 GHz is proposed in this paper. The measurement set-up is based on an open-ended coaxial probe instrumented with a home-made microwave interferometer. The interferometer is used to match the…

IEEE International Instrumentation and Meausurement Technology Conference, IEEE I2MTC 2017, May 2017, Torino, Italy. pp.909-914, ⟨10.1109/I2MTC.2017.7969796⟩. ⟨hal-03224652⟩