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Affichage de 6441 à 6450 sur 16101

Communication dans un congrès

Minimum spanning tree topology in real zigbee-arduino sensor network

M. Ouadou, O. Zytoune, Yassin El Hillali, Atika Rivenq, D. Aboutajdine

In this paper, we present a real indoor application for improved”Cluster Tree” network using Zigbee sensor nodes integrated with”Arduino” microcontrollers where the main goal is to study the efficiency of our improved clustering topology based on Minimum Spanning Tree (MST) construction under real...

7th International Conference on Ad Hoc Networks, AdHocHets 2015, Sep 2015, San Remo, Italy. pp.57-68, ⟨10.1007/978-3-319-25067-0_5⟩. ⟨hal-03528680⟩

Communication dans un congrès

Modeling of ZigBee (IEEE 802.15.4) channel in rail environment for Intelligent Transport

Ulrich Biaou, Laïd Sadoudi, Michael Bocquet, Atika Rivenq

To deploy Wireless Sensor Networks (WSNs) in the railway transport, knowledge of signal propagation in this environment is required for the safety and the reliability of whole system. This calls to two domains of research. Firstly, the study of the propagation characteristics is necessary to...

4th IEEE International Conference on Advanced Logistics and Transport, IEEE ICALT 2015, May 2015, Valenciennes, France. pp.293-298, ⟨10.1109/ICAdLT.2015.7136637⟩. ⟨hal-03528689⟩

Article dans une revue

Kinetic proofreading of chromatin remodeling: from gene activation to gene repression and back

Raghvendra Singh, Guillaume Brysbaert, Marc Lensink, Fabrizio Cleri, Ralf Blossey

ATP-dependent chromatin remodeling is the active displacement of nucleosomes along or off DNA induced by chromatin remodeling complexes. This key process of gene regulation in eukaryote organisms has recently been argued to be controlled by a kinetic proofreading mechanism. In this paper we present...

AIMS Biophysics, 2015, 2 (4), pp.398-411. ⟨10.3934/biophy.2015.4.398⟩. ⟨hal-03285276⟩

Article dans une revue

Ambiguity function and Cramer-Rao bounds for standard and new modified Costas signals

Nadjah Touati, Charles Tatkeu, Thierry Chonavel, Yassin El Hillali, Atika Rivenq

The Cramer-Rao bound (CRB) gives a lower variance bound that an estimator can achieve. Presented is a mathematical approach to estimate it for specific radar signals, namely Costas signals and their modified versions. The modified versions design consists in widening Costas frequency hops and...

Electronics Letters, 2015, 51 (19), pp.1497-1499. ⟨10.1049/el.2015.1092⟩. ⟨hal-01213613⟩

Communication dans un congrès

Near-field scanning microwave microscope for subsurface non-destructive characterization

Sijia Gu, Kamel Haddadi, Abdelhatif El Fellahi, Tuami Lasri

We report a nondestructive testing system based on near-field scanning microwave microscopy. The instrumentation is built up with a vector network analyzer, a fully automated tuning matching network and an evanescent microwave probe. The system can perform microwave images in the frequency band 0.1...

45th European Microwave Conference (EuMC), Sep 2015, Paris, France. pp.155-158, ⟨10.1109/EuMC.2015.7345723⟩. ⟨hal-03224667⟩

Article dans une revue

A Unified Explanation of gm /ID -Based Noise Analysis

Jack Ou, Pietro Maris Ferreira

We present an unified explanation of the transconductance-to-drain current (gm/ID)-based noise analysis in this paper. We show that both thermal noise coefficient (γ) and device noise corner frequency (fco) are dependent on the gm/ID of a transistor. We derive expressions to demonstrate the...

Journal of Circuits, Systems, and Computers, 2015, 24 (1), pp.1550010. ⟨10.1142/S0218126615500103⟩. ⟨hal-01222077⟩

Communication dans un congrès

0.69 THz room temperature heterodyne detection using GaN nanodiodes

Carlos Daher, Jeremie Torres, Ignacio Iñiguez-De-La-Torre, Philippe Nouvel, Luca Varani, Paul Sangaré, Guillaume Ducournau, Christophe Gaquière, Javier Mateos, And Tomás González

GaN-based asymmetric nanodiodes have been used as heterodyne detectors up to 0.69 THz in free-space configuration where Intermediate Frequency bandwidth has been measured up 13 GHz. Monte Carlo simulations, used to estimate nano-device intrinsic conversion losses of 27 dB have confirmed these...

19th International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures, 2015, Salamanca, Spain. ⟨10.1088/1742-6596/647/1/012006⟩. ⟨hal-01920765⟩

Communication dans un congrès

Time-Frequency Processing Adapted for the Different Electromagnetic Compatibility Issues in the Railway Domain

Mohammed Raouf Kousri, Virginie Deniau, Marc Heddebaut, S. Baranowski, Jean Rioult

The railway environment is very rich in terms of electromagnetic disturbances. The variety of the transient and permanent interferences and the current evolution of the communication and signaling railway systems require the adaptation of EMC railway standards. In particular, standardized emission..., L'environnement électromagnétique du chemin de fer est très riche en termes de perturbations électromagnétiques. La variété des signaux transitoires et des interférences permanentes et l'évolution actuelle des systèmes de communication et de signalisation ferroviaire nécessitent l'...

EMC 2015, Joint IEEE International Symposium on Electromagnetic Compatibility and EMC Europe, Aug 2015, Dresden, Germany. 6p, ⟨10.1109/ISEMC.2015.7256353⟩. ⟨hal-01471551⟩

Article dans une revue

Drift velocity versus electric field in < 110 > Si nanowires: Strong confinement effects

Jing Li, Gabriel Mugny, Yann-Michel Niquet, Christophe Delerue

We have performed atomistic simulations of the phonon-limited high field carrier transport in < 110 > Si nanowires with small diameter. The carrier drift velocities are obtained from a direct solution of the non-linear Boltzmann transport equation. The relationship between the drift velocity...

Applied Physics Letters, 2015, 107 (6), pp.063103. ⟨10.1063/1.4928525⟩. ⟨hal-01615208⟩

Communication dans un congrès

QAM-32/0.588 THz communication using electronic Schottky transceivers

Guillaume Ducournau, Pascal Szriftgiser, Denis Bacquet, Emilien Peytavit, Mohammed Zaknoune, Rédha Kassi, Jean-Francois Lampin

We report on THz communication system using vectorial modulations schemes above 500 GHz. Using schottky-based electronic technologies at 588 GHz, potentialities of high-level multi-carrier modulation schemes for wireless links are analyzed. The wireless link is composed of an emitter with sub-...

40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Aug 2015, Hong Kong, Hong Kong SAR China. ⟨10.1109/IRMMW-THz.2015.7327665⟩. ⟨hal-03286182⟩