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Affichage de 3271 à 3280 sur 16179

Article dans une revue

Joint modeling of received power, mean delay, and delay spread for wideband radio channels

Ayush Bharti, Ramoni Adeogun, Xuesong Cai, Wei Fan, Francois-Xavier Briol, Laurent Clavier, Troels Pedersen

We propose a multivariate log-normal distribution to jointly model received power, mean delay, and root mean square (rms) delay spread of wideband radio channels, referred to as the standardized temporal moments. The model is validated using experimental data collected from five different…

IEEE Transactions on Antennas and Propagation, 2021, 69 (8), pp.4871-4882. ⟨10.1109/TAP.2021.3060099⟩. ⟨hal-03347804⟩

Communication dans un congrès

Zero on site testing of railway wireless systems: the Emulradio4Rail platforms

Marion Berbineau, Ali Sabra, Virginie Deniau, Christophe Gransart, Raul Torrego, Aitor Arriola, Inaki Val, Jose Soler, Ying Yan, Alessandro Vizzarri, Franco Mazzenga, Sofiane Kharbech, Laurent Clavier, Rédha Kassi, Juan Moreno Garcia-Loygorri

The European Train Control System (ETCS) relies today on the 2nd generation cellular system GSM-R. GSM-R obsolescence has triggered the evolution of the current European Railway Traffic Management System (ERTMS) to the Future Railway Mobile Communication System (FRMCS), under development. FRMCS…

93rd Vehicular Technology Conference (VTC2021-Spring), Apr 2021, Helsinki, Finland. ⟨10.1109/VTC2021-Spring51267.2021.9448903⟩. ⟨hal-03361485⟩

Communication dans un congrès

Signals to Spikes for Neuromorphic Regulated Reservoir Computing and EMG Hand Gesture Recognition

N. Garg, I. Balafrej, Y. Beilliard, Dominique Drouin, F. Alibart, J. Rouat

Surface electromyogram (sEMG) signals result from muscle movement and hence they are an ideal candidate for benchmarking event-driven sensing and computing. We propose a simple yet novel approach for optimizing the spike encoding algorithm's hyper-parameters inspired by the readout layer…

2021 International Conference on Neuromorphic Systems (ICONS 2021), Jul 2021, Knoxville, TN, United States. pp.29, ⟨10.1145/3477145.3477267⟩. ⟨hal-03541948⟩

Communication dans un congrès

Measurement of the V2I massive radio channel with the MaMIMOSA sounder in a suburban environment

Davy Gaillot, Pierre Laly, N Dahmouni, Gauthier Delbarre, M van den Bossche, G Vermeeren, E Tanghe, Eric Pierre Simon, W Joseph, L Martens, M. Lienard

This paper presents the first V2I channel sounding campaign with the real-time massive MIMO radio channel sounder named MaMIMOSA. This equipment has been jointly developed by ULille (FR) and UGhent (BE) for 5G V2X applications. The system is equipped with a massive 64-antenna array for Tx whereas…

15th European Conference on Antennas and Propagation, EuCAP2021, Mar 2021, Dusseldorf, Germany. ⟨10.23919/EuCAP51087.2021.9410994⟩. ⟨hal-03346229⟩

Communication dans un congrès

Dynamic thermoregulatory photonic crystal fabric for personal thermal management

Mohamed Boutghatin, Yan Pennec, Salim Assaf, Michèle Carette, V. Thomy, Abdellatif Akjouj, Bahram Djafari-Rouhani

Personal thermal management represents a new paradigm to reduce the energy consumption, which consists in controlling the temperature around the human body rather than regulating the temperature of the entire residential space. Recent progress in smart textile showed promising radiative heating and…

2021 IEEE Sensors, Oct 2021, Sydney, Australia. pp.1-4, ⟨10.1109/SENSORS47087.2021.9639828⟩. ⟨hal-03501272⟩

Communication dans un congrès

Quadratic detection-based millimeter-wave MMIC for wireless communication and localization

Christophe Loyez, Michael Bocquet, Kamel Haddadi

This paper presents a multi-functional topology of a monolithic microwave monolithic integrated circuit (MMIC) capable of performing both wireless communications and geolocation devices. The architecture of this MMIC allows several RF functionalities such as conventional frequency heterodyning for…

2021 International Symposium on Networks, Computers and Communications (ISNCC), Session A10 - Signals and Communication Systems, Oct 2021, Dubai (virtual), United Arab Emirates. pp.1-5, ⟨10.1109/ISNCC52172.2021.9615694⟩. ⟨hal-03457159⟩

Communication dans un congrès

Energy-efficient 1-bit feedback NOMA in wireless networks with no CSIT/CDIT

Hajar El Hassani, Anne Savard, E Veronica Belmega

In this paper, the energy efficiency of a two-user downlink non-orthogonal multiple access (NOMA) system is investigated. We consider a stochastic time-varying channel that is unknown at the transmitter side (in state and distribution) and propose an online learning method that is energy efficient…

IEEE Statistical Signal Processing Workshop, SSP 2021, Jul 2021, Rio de Janeiro, Brazil. IoT-1, 5 p., ⟨10.1109/SSP49050.2021.9513763⟩. ⟨hal-03227273⟩

Chapitre d'ouvrage

Human Facial Age Estimation: Handcrafted Features Versus Deep Features

S.E. Bekhouche, F. Dornaika, A. Ouafi, Abdelmalik Taleb-Ahmed

In recent times, human facial age estimation topic attracted a lot of attention due to its ability to improve biometrics systems. Recently, several applications that exploit demographic attributes have emerged. These applications include: access control, re-identification in surveillance videos,…

Advances in Science, Technology and Innovation, Springer Nature, pp.31-37, 2021, ⟨10.1007/978-3-030-14647-4_3⟩. ⟨hal-03541943⟩

Article dans une revue

Experimental Investigation of the Parameters Influencing the Surface Defect Detection by Using the Critically Refracted Longitudinal Waves

Wahiba Djerir, Mohamed Ourak, Tarek Boutkedjirt

Abstract: The aim of this work is the detection of surface defects by the refracted longitudinal wave and the study of the parameters that influence the use of this wave in transmission and reflection modes in order to optimize the non-destructive testing (NDT) conditions with the LCR waves. For…

Defektoskopiya / Russian Journal of Nondestructive Testing, 2021, 57 (1), pp.55-60. ⟨10.1134/S106183092130001X⟩. ⟨hal-03542164⟩

Article dans une revue

Roll-to-roll in-line implementation of microwave free-space non-destructive evaluation of conductive composite thin layer materials

Grigorios Koutsoukis, Ivan Alic, Antonios Vavouliotis, Ferry Kienberger, Kamel Haddadi

A free-space microwave nondestructive testing and evaluation module is developed for the low-power, non-ionizing, contactless, and real-time characterization of doped composite thin-film materials in an industrial context. The instrumentation proposed is built up with a handled vector network…

Applied Sciences, 2021, 11 (1), 378, 11 p. ⟨10.3390/app11010378⟩. ⟨hal-03124050⟩