Ray-based Deterministic Channel Modelling for sub-THz Band

Future wireless communications systems will require large network capacities beyond the capabilities of present and upcoming 5G technology. The trend of considering higher frequencies for their large bandwidths continues today into the sub-THz domain. The BRAVE project considers the frequencies in the 90-200 GHz spectrum, which have been considered in this paper. The challenges of channel modelling at sub-THz frequencies are described along with extensions made to a ray-based deterministic tool. The geographical and physical accuracies inherent to the ray-based tool are exploited to simulate two different scenarios. The first scenario is an indoor office scenario and the second is an outdoor in-street scenario. The application of the updated channel modelling properties of the ray-based tool provides interesting perspectives into the sub-THz channel modelling. This permits the development of realistic models for the evaluation, characterization and eventual deployment of such systems

State-of-the-art assessment of 5G mmWave communications

Deliverable D2.1 del proyecto 5GWirelessMain objective of the European 5Gwireless project, which is part of the H2020 Marie Slodowska- Curie ITN (Innovative Training Networks) program resides in the training and involvement of young researchers in the elaboration of future mobile communication networks, focusing on innovative wireless technologies, heterogeneous network architectures, new topologies (including ultra-dense deployments), and appropriate tools. The present Document D2.1 is the first deliverable of Work- Package 2 (WP2) that is specifically devoted to the modeling of the millimeter-wave (mmWave) propagation channels, and development of appropriate mmWave beamforming and signal processing techniques. Deliver D2.1 gives a state-of-the-art on the mmWave channel measurement, characterization and modeling; existing antenna array technologies, channel estimation and precoding algorithms; proposed deployment and networking techniques; some performance studies; as well as a review on the evaluation and analysis toolsPostprint (published version

Technology Roadmap for Beyond 5G Wireless Connectivity in D-band

International audienceWireless communication in millimeter wave bands, namely above 20 GHz and up to 300 GHz is foreseen as a key enabler technology for the next generation of wireless systems. The huge available bandwidth is contemplated to achieve high data rate wireless communications, and hence, to fulfill the requirements of future wireless networks. Several Beyond 5G applications are considered for these systems: high capacity back-haul, enhanced hot-spot kiosk as well as short-range Device-to-Device communications. In this paper we propose to discuss the trade-offs between scenario requirements and current silicon technologies limits to draw a technology roadmap for the next generation of wireless connectivity in D-band

Radio sur fibre pour un réseau local domestique millimétrique

National audienceLe projet FUI ORIGIN (Optical-Radio Infrastructure for Gigabit/s Indoor Networks) adresse le marché du Réseau Local Domestique pour lequel il propose une nouvelle infrastructure à très haut débit associant un câblage à fibre optique avec une diffusion radio 60GHz. Les premiers tests de cette infrastructure ont donné des résultats probants : un lien Radio sur Fibre en fréquence intermédiaire étendant la portée d'une transmission radio millimétrique est ici proposé et caractérisé complètement en termes d'EVM. Ce concept est validé par l'utilisation de produits commerciaux Wireless HD. Les études se poursuivent pour intégrer les systèmes optique-microondes en utilisant des composants bas coûts et innovants, comme les phototransistors SiGe/Si et des VCSEL analogiques

Roadmap on energy harvesting materials

Ambient energy harvesting has great potential to contribute to sustainable development and address growing environmental challenges. Converting waste energy from energy-intensive processes and systems (e.g. combustion engines and furnaces) is crucial to reducing their environmental impact and achieving net-zero emissions. Compact energy harvesters will also be key to powering the exponentially growing smart devices ecosystem that is part of the Internet of Things, thus enabling futuristic applications that can improve our quality of life (e.g. smart homes, smart cities, smart manufacturing, and smart healthcare). To achieve these goals, innovative materials are needed to efficiently convert ambient energy into electricity through various physical mechanisms, such as the photovoltaic effect, thermoelectricity, piezoelectricity, triboelectricity, and radiofrequency wireless power transfer. By bringing together the perspectives of experts in various types of energy harvesting materials, this Roadmap provides extensive insights into recent advances and present challenges in the field. Additionally, the Roadmap analyses the key performance metrics of these technologies in relation to their ultimate energy conversion limits. Building on these insights, the Roadmap outlines promising directions for future research to fully harness the potential of energy harvesting materials for green energy anytime, anywhere

Biological versus chronological ovarian age:implications for assisted reproductive technology

<p>Abstract</p> <p>Background</p> <p>Women have been able to delay childbearing since effective contraception became available in the 1960s. However, fertility decreases with increasing maternal age. A slow but steady decrease in fertility is observed in women aged between 30 and 35 years, which is followed by an accelerated decline among women aged over 35 years. A combination of delayed childbearing and reduced fecundity with increasing age has resulted in an increased number and proportion of women of greater than or equal to 35 years of age seeking assisted reproductive technology (ART) treatment.</p> <p>Methods</p> <p>Literature searches supplemented with the authors' knowledge.</p> <p>Results</p> <p>Despite major advances in medical technology, there is currently no ART treatment strategy that can fully compensate for the natural decline in fertility with increasing female age. Although chronological age is the most important predictor of ovarian response to follicle-stimulating hormone, the rate of reproductive ageing and ovarian sensitivity to gonadotrophins varies considerably among individuals. Both environmental and genetic factors contribute to depletion of the ovarian oocyte pool and reduction in oocyte quality. Thus, biological and chronological ovarian age are not always equivalent. Furthermore, biological age is more important than chronological age in predicting the outcome of ART. As older patients present increasingly for ART treatment, it will become more important to critically assess prognosis, counsel appropriately and optimize treatment strategies. Several genetic markers and biomarkers (such as anti-Müllerian hormone and the antral follicle count) are emerging that can identify women with accelerated biological ovarian ageing. Potential strategies for improving ovarian response include the use of luteinizing hormone (LH) and growth hormone (GH). When endogenous LH levels are heavily suppressed by gonadotrophin-releasing hormone analogues, LH supplementation may help to optimize treatment outcomes for women with biologically older ovaries. Exogenous GH may improve oocyte development and counteract the age-related decline of oocyte quality. The effects of GH may be mediated by insulin-like growth factor-I, which works synergistically with follicle-stimulating hormone on granulosa and theca cells.</p> <p>Conclusion</p> <p>Patients with biologically older ovaries may benefit from a tailored approach based on individual patient characteristics. Among the most promising adjuvant therapies for improving ART outcomes in women of advanced reproductive age are the administration of exogenous LH or GH.</p

Food anal. methods

Food counterfeit is a major issue for food industries. In the case of wines, there can be multiple forgeries such as geographical, vintage, or varietal mislabeling. For the last 10 years, the use of quantitative 1H NMR (q-NMR) for food authentication has experienced an enormous increase. This study was based on a comparative evaluation of the results obtained for three sets of authentic high-valued wines and suspected wines. Two methodologies have been followed: (i) the usual wine analysis, based on the utilization of multiple techniques, which is the traditional way of analysis for wine authentication and (ii) q-NMR profiling, the alternative proposed method. For wine comparison, an original approach based on similarity score (S-score) by analogy to the Z-score calculation was developed. A limit of four S-scores outside the range − 2/2 has been, arbitrary, defined to reveal that wines are different using q-NMR analysis. Data treatments allowed the extraction of discriminating parameters, some of which were common to both approaches while others could be linked to the techniques’ capabilities showing the complementarity of the two approaches. This study demonstrated the potential of q-NMR in wine authentication by comparative analysis with authentic samples. The q-NMR alternative method has also the advantages of rapidity (around 20 min including sample preparation, analysis, and data treatment) and low volume (0.5 mL), which is a prerequisite for analyzing priceless wines

Food chem.

The q-NMR metabolomics has already demonstrated its potential for classifying wines of different geographical origins, grape varieties, or vintages. This study focuses on the characterisation of Bordeaux red wines, seeking to discriminate them from others produced in the major French wine regions. A sampling of 224 commercial French wines was analysed by 1H NMR and forty compounds were quantified. Non-supervised and supervised statistical analyses revealed a singular imprint of Bordeaux wines in comparison with other French wines, with classification rates ranging from 71% to 100%. Within the Bordeaux vineyards, red wines from the different Bordeaux subdivisions were analysed from different vintages. Our results indicate that q-NMR metabolomics enables the differentiation of Médoc and Libournais vineyard highlighting the most discriminant constituents. In addition, the effects of wine evolution during bottle aging and vintage on Bordeaux red wines were pointed out and discussed

Optimized Single Carrier Transceiver for Future Sub-TeraHertz Applications

International audienceThe performance of sub-THz communications, contemplated for the next generation of wireless networks, are significantly degraded by oscillator phase noise. In this paper, we address the design of a single carrier transceiver resilient to phase noise. This problem is treated in two steps: First, we derive for phase noise channels the optimum symbol detection criterion. Second, we propose a phase noise robust modulation scheme with a comprehensive and efficient structure. System level simulations modeling the sub-THz propagation channel of a rich outdoor environment through ray tracing are also presented. Results show that optimizing the modulation and demodulation schemes is necessary to achieve high spectral efficiency in the presence of phase noise

Beyond-5G wireless Tbps scenarios and requirements

The BRAVE project proposes to investigate innovative technologies allowing an efficient radio-communication usage of the 90GHz-200GHz spectrum. It will contribute to the emergence of ultra-high throughput and capacity beyond-5G (B5G) wireless communication systems. The wideband Single-Carrier (SC) waveform will be studied as an enabler for the migration of 5G networks towards Tbps systems. Achieving PHY-layer high spectrum efficiency under low energy consumption constraint is the main challenge. The BRAVE project, defines six major PHY-related objectives: (i) the partners will elaborate analog and digital processing solutions that; (ii) operate above 90 GHz, based on; (iii) new efficient and ultra-wideband SC waveforms; the specific channel properties, and (iv) RF impairments are modelled and considered in the waveform design; (v) the integration into a simulation link- and system-level platform permits the assessment of the proposed technology in realistic scenarios; (vi) and, the project identifies the spectrum regulation constraints and requirements.This document presents a description of some applicative scenarios and use cases in which ultra-high throughput (of order of Tbps) wireless communication systems are envisaged in bands above 90 GHz: kiosk download, wireless backhauling, Fixed Wireless Access (FWA), drones, server farm, hotspots with Augmented Reality (AR) or Virtual Reality (VR) multiple users, inter- or intra-chip communications. An insight on the spectrum availability to deploy such wireless communications is provided based on the French National Frequency Agency (ANFR) guidance and recommendations. Key performance indicators are also given to evaluate and compare the different achieved technical performances and solutions. A preliminary list of KPIs per scenario with system parameters and performance requirements is also provided in this technical deliverable. It is worth mentioning that depicted KPIs values constitute a preliminary and an early shaping of targeted parameters for future Tbps wireless communications, that still need to be validated and confirmed. The BRAVE project will contribute to this effort in further work packages (WP2 and WP3) mainly for scenarios as “kiosk”, FWA or mesh backhauling.This document gives a first version of BRAVE spectrum opportunities and scenarios. The spectrum regulation aspects will be completed mid-2019 in deliverable D1.1, while the scenarios will be updated and finalized at the end of the project in deliverable D1.2