Search Results - "Rosny, Julien"

Smart radio environments empowered by reconfigurable AI meta-surfaces: an idea whose time has come by Renzo, Marco Di, Debbah, Merouane, Phan-Huy, Dinh-Thuy, Zappone, Alessio, Alouini, Mohamed-Slim, Yuen, Chau, Sciancalepore, Vincenzo, Alexandropoulos, George C., Hoydis, Jakob, Gacanin, Haris, Rosny, Julien de, Bounceur, Ahcene, Lerosey, Geoffroy, Fink, Mathias

“…Future wireless networks are expected to constitute a distributed intelligent wireless communications, sensing, and computing platform, which will have the…”
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Reconfigurable Intelligent Surfaces vs. Relaying: Differences, Similarities, and Performance Comparison by Di Renzo, Marco, Ntontin, Konstantinos, Song, Jian, Danufane, Fadil H., Qian, Xuewen, Lazarakis, Fotis, De Rosny, Julien, Phan-Huy, Dinh-Thuy, Simeone, Osvaldo, Zhang, Rui, Debbah, Meroaune, Lerosey, Geoffroy, Fink, Mathias, Tretyakov, Sergei, Shamai, Shlomo

“…Reconfigurable intelligent surfaces (RISs) have the potential of realizing the emerging concept of smart radio environments by leveraging the unique properties…”
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Antenna Radiation Efficiency Estimation From Backscattering Measurement Performed Within Reverberation Chambers by Krouka, Wafa, Sarrazin, Francois, Rosny, Julien de, Labdouni, Adnane, Richalot, Elodie

“…This article presents a contactless measurement method for antenna radiation efficiency estimation within reverberation chambers (RCs). This method does not…”
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Seismic surface wave focal spot imaging: numerical resolution experiments by Giammarinaro, Bruno, Tsarsitalidou, Christina, Hillers, Gregor, de Rosny, Julien, Seydoux, Léonard, Catheline, Stefan, Campillo, Michel, Roux, Philippe

“…SUMMARY Numerical experiments of seismic wave propagation in a laterally homogeneous layered medium explore subsurface imaging at subwavelength distances for…”
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High Rejection and Frequency Agile Optical Filtering of RF Signals Using a Rare Earth Ion-Doped Crystal by Ulrich, Lothaire, Welinski, Sacha, Louchet-Chauvet, Anne, Rosny, Julien de, Dolfi, Daniel, Vaneph, Cyril, Berger, Perrine, Morvan, Loic

“…While photonics is broadly considered as a leading solution for analog RF processing, photonic RF filters often show a limited out-of-band rejection. In this…”
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Open birdcage coil for head imaging at 7T by Nikulin, Anton V., Vignaud, Alexandre, Avdievich, Nikolai I., Berrahou, Djamel, Rosny, Julien, Ourir, Abdelwaheb

“…Purpose To theoretically describe, design, and test the new geometry of the birdcage coil for 7 Tesla anatomical brain imaging, which includes a large window…”
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Characterization of rockfalls from seismic signal: Insights from laboratory experiments by Farin, Maxime, Mangeney, Anne, Toussaint, Renaud, Rosny, Julien de, Shapiro, Nikolai, Dewez, Thomas, Hibert, Clément, Mathon, Christian, Sedan, Olivier, Berger, Frédéric

“…The seismic signals generated by rockfalls can provide information on their dynamics and location. However, the lack of field observations makes it difficult…”
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Wireless Communications Through Reconfigurable Intelligent Surfaces by Basar, Ertugrul, Di Renzo, Marco, De Rosny, Julien, Debbah, Merouane, Alouini, Mohamed-Slim, Zhang, Rui

“…The future of mobile communications looks exciting with the potential new use cases and challenging requirements of future 6th generation (6G) and beyond…”
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On the Path-Loss of Reconfigurable Intelligent Surfaces: An Approach Based on Green's Theorem Applied to Vector Fields by Danufane, Fadil H., Renzo, Marco Di, de Rosny, Julien, Tretyakov, Sergei

“…In this paper, we introduce a physics-consistent analytical characterization of the free-space path-loss of a wireless link in the presence of a reconfigurable…”
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Experimental study of passive defect localization in plates using ambient noise by Chehami, Lynda, De Rosny, Julien, Prada, Claire, Moulin, Emmanuel, Assaad, Jamal

“…Passive listening methodology has been shown to be a practical and effective method for passive structural health monitoring. In this work, this approach is…”
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Experimental validation of theoretical methods to estimate the energy radiated by elastic waves during an impact by Farin, Maxime, Mangeney, Anne, Rosny, Julien de, Toussaint, Renaud, Sainte-Marie, Jacques, Shapiro, Nikolaï M.

“…Estimating the energy lost in elastic waves during an impact is an important problem in seismology and in industry. We propose three complementary methods to…”
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Wireless coils based on resonant and nonresonant coupled‐wire structure for small animal multinuclear imaging by Vergara Gomez, Tania S., Dubois, Marc, Glybovski, Stanislav, Larrat, Benoit, Rosny, Julien, Rockstuhl, Carsten, Bernard, Monique, Abdeddaim, Redha, Enoch, Stefan, Kober, Frank

“…Earlier work on RF metasurfaces for preclinical MRI has targeted applications such as whole‐body imaging and dual‐frequency coils. In these studies, a…”
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Far field subwavelength imaging of magnetic patterns by Ourir, Abdelwaheb, Lerosey, Geoffroy, Lemoult, Fabrice, Fink, Mathias, de Rosny, Julien

“…Far field imaging of subwavelength magnetic objects in real time is a very challenging issue. We propose an original solution based on a planar array of…”
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Mimicking the cochlea with an active acoustic metamaterial by Rupin, Matthieu, Lerosey, Geoffroy, de Rosny, Julien, Lemoult, Fabrice

“…The human ear is a fascinating sensor, capable of detecting pressures over ten octaves of frequency and twelve orders of magnitudes. Here, following a…”
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Towards anti-causal Green’s function for three-dimensional sub-diffraction focusing by Ma, Guancong, Fan, Xiying, Ma, Fuyin, de Rosny, Julien, Sheng, Ping, Fink, Mathias

“…In causal physics, the causal Green’s function describes the radiation of a point source. Its counterpart, the anti-causal Green’s function, depicts a…”
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Learning and Avoiding Disorder in Multimode Fibers by Matthès, Maxime W., Bromberg, Yaron, de Rosny, Julien, Popoff, Sébastien M.

“…Multimode optical fibers (MMFs) have gained renewed interest in the past decade, emerging as a way to boost optical communication data rates in the context of…”
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Link Between the Dynamics of Granular Flows and the Generated Seismic Signal: Insights From Laboratory Experiments by Farin, Maxime, Mangeney, Anne, de Rosny, Julien, Toussaint, Renaud, Trinh, Phuong‐Thu

“…Granular column collapse experiments have been conducted on a flat rough surface tilted at various angles with synchronous measurements of the flow dynamics…”
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Relations Between the Characteristics of Granular Column Collapses and Resultant High‐Frequency Seismic Signals by Farin, Maxime, Mangeney, Anne, Rosny, Julien, Toussaint, Renaud, Trinh, Phuong‐Thu

“…Deducing relations between the dynamic characteristics of landslides and rockfalls and the resultant high‐frequency (>1 Hz) seismic signal is challenging. To…”
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Experimental Validation of Time Reversal Multiple Access for UWB Wireless Communications Centered at the 273 GHz Frequency by Mokh, Ali, Rosny, Julien de, Alexandropoulos, George C., Kamoun, Mohamed, Ourir, Abdelwaheb, Khayatzadeh, Ramin, Tourin, Arnaud, Fink, Mathias

“…Ultra-high data rates with low-power consumption wireless communications and low-complexity receivers is one of the key requirements for the next 6-th…”
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Reaching the precision limit with tensor-based wavefront shaping by Gutiérrez-Cuevas, Rodrigo, Bouchet, Dorian, de Rosny, Julien, Popoff, Sébastien M.

“…Perturbations in complex media, due to their own dynamical evolution or to external effects, are often seen as detrimental. Therefore, a common strategy,…”
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