University of Kaiserslautern | Date: 2015-03-19
The present invention relates to a method and a device for an error correction of transmitted data. For this purpose, the transmitted data are encoded in a block code, wherein the block code comprises a number of data bits and an additional number of redundant bits. Herein the block code is described by a parity-check matrix H, wherein columns of the parity-check matrix Hare inherently related to the data bits of the block code. The method according to the present invention comprises the following steps: (a) diagonalizing the parity-check matrix H, with respect to at least one column of the parity-check matrix H, into a diagonalized parity-check matrix H, wherein the diagonalized parity-check matrix H is related to the block code and to the at least one column; (b) determining at least one error position (130) in the block code by using the diagonalized parity-check matrix H and a syndrome vector, wherein the syndrome vector is related to the data bits in the block code; (c) performing the error correction of the transmitted data at the at least one error position (130) in the block code. The present method and device allow providing communication channels with increased reliability and enhanced correction capability at reduced complexity, and is generally applicable to all known block codes, such as turbo, LDPC, BCH, or Reed-Solomon codes.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: ICT-30-2015 | Award Amount: 7.50M | Year: 2016
The lack of interoperability is considered as the most important barrier to achieve the global integration of IoT ecosystems across borders of different disciplines, vendors and standards. Indeed, the current IoT landscape consists of a large set of isolated islands that do not constitute a real internet, preventing the exploitation of the huge potential expected by ICT visionaries. To overcome this situation, VICINITY presents a virtual neighborhood concept, which is a decentralized, bottom-up and cross-domain approach that resembles a social network, where users can configure their set ups, integrate standards according to the services they want to use and fully control their desired level of privacy. VICINITY then automatically creates technical interoperability up to the semantic level. This allows users without technical background to get connected to the vicinity ecosystem in an easy and open way, fulfilling the consumers needs. Furthermore, the combination of services from different domains together with privacy-respectful user-defined share of information, enables synergies among services from those domains and opens the door to a new market of domain-crossing services. VICINITYs approach will be demonstrated by a large-scale demonstration connecting 8 facilities in 7 different countries. The demonstration covers various domains including energy, building automation, health and transport. VICINITYs potential to create new, domain-crossing services will be demonstrated by value added services such as micro-trading of DSM capabilities, AI-driven optimization of smart urban districts and business intelligence over IoT. Open calls are envisioned in the project to integrate further, preferably public, IoT infrastructures and to deploy additional added value services. This will not only extend the scale of VICINITY demonstration, but also efficiently raise the awareness of industrial communities of VICINITY and its capabilities.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: ICT-06-2016 | Award Amount: 3.57M | Year: 2017
The goal of LightKone is to develop a scientifically sound and industrially validated model for doing general-purpose computation on edge networks. An edge network consists of a large set of heterogeneous, loosely coupled computing nodes situated at the logical extreme of a network. Common examples are networks of Internet of Things, mobile devices, personal computers, and points of presence including Mobile Edge Computing. Internet applications are increasingly running on edge networks, to reduce latency, increase scalability, resilience, and security, and permit local decision making. However, todays state of the art, the gossip and peer-to-peer models, give no solution for defining general-purpose computations on edge networks, i.e., computation with shared mutable state. LightKone will solve this problem by combining two recent advances in distributed computing, namely synchronisation-free programming and hybrid gossip algorithms, both of which are successfully used separately in industry. Together, they are a natural combination for edge computing. We will cover edge networks both with and without data center nodes, and applications focused on collaboration, computation, and both. Project results will be new programming models and algorithms that advance scientific understanding, implemented in new industrial applications and a startup company, and evaluated in large-scale realistic settings.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: FETPROACT-01-2016 | Award Amount: 5.99M | Year: 2017
Guaranteed numerical precision of each elementary step in a complex computation has been the mainstay of traditional computing systems for many years. This era, fueled by Moores law and the constant exponential improvement in computing efficiency, is at its twilight: from tiny nodes of the Internet-of-Things, to large HPC computing centers, sub-picoJoule/operation energy efficiency is essential for practical realizations. To overcome the power wall, a shift from traditional computing paradigms is now mandatory. OPRECOMP aims at demolishing the ultra-conservative precise computing abstraction and replacing it with a more flexible and efficient one, namely transprecision computing. OPRECOMP will investigate the theoretical and practical understanding of the energy efficiency boost obtainable when accuracy requirements on data being processed, stored and communicated can be lifted for intermediate calculations. While approximate computing approaches have been used before, in OPRECOMP for the first time ever, a complete framework for transprecision computing, covering devices, circuits, software tools, and algorithms, along with the mathematical theory and physical foundations of the ideas will be developed that not only will provide error bounds with respect to full precision results, but also will enable major energy efficiency improvements even when there is no freedom to relax end-to-end application quality-of-results. The mission of OPRECOMP is to demonstrate using physical demonstrators that this idea holds in a huge range of application scenarios in the domains of IoT, Big Data Analytics, Deep Learning, and HPC simulations: from the sub-milliWatt to the MegaWatt range, spanning nine orders of magnitude. In view of industrial exploitation, we will prove the quality and reliability and demonstrate that transprecision computing is the way to think about future systems.
Rodriguez N.,University of Kaiserslautern |
Goossen L.J.,University of Kaiserslautern
Chemical Society Reviews | Year: 2011
This critical review examines transition metal-catalyzed decarboxylative couplings that have emerged within recent years as a powerful strategy to form carbon-carbon or carbon-heteroatom bonds starting from carboxylic acids. In these reactions, C-C bonds to carboxylate groups are cleaved, and in their place, new carbon-carbon bonds are formed. Decarboxylative cross-couplings constitute advantageous alternatives to traditional cross-coupling or addition reactions involving preformed organometallic reagents. Decarboxylative reaction variants are also known for Heck reactions, direct arylation processes, and carbon-heteroatom bond forming reactions. © 2011 The Royal Society of Chemistry.
Louillat M.-L.,University of Kaiserslautern |
Patureau F.W.,University of Kaiserslautern
Chemical Society Reviews | Year: 2014
Towards "Oxidative-Ullmann-Goldberg" and "Oxidative- Buchwald-Hartwig" type amination reactions. This review focuses on the newly developed oxidative C-N bond formation techniques, applicable in the field of organic synthesis. Particular emphasis is given to those which are classified as cross-dehydrogenative-couplings, through dual C-H and N-H activation, thus formally extruding "H2" as a by-product. © The Royal Society of Chemistry.
Agency: European Commission | Branch: H2020 | Program: ERC-STG | Phase: ERC-2016-STG | Award Amount: 1.49M | Year: 2017
The field of C-H bond activation has evolved at an exponential pace in the last 15 years. What appeals most in those novel synthetic techniques is clear: they bypass the pre-activation steps usually required in traditional cross-coupling chemistry by directly metalating C-H bonds. Many C-H bond functionalizations today however, rely on poorly atom and step efficient oxidants, leading to significant and costly chemical waste, thereby seriously undermining the overall sustainability of those methods. As restrictions in sustainability regulations will further increase, and the cost of certain chemical commodities will rise, atom efficiency in organic synthesis remains a top priority for research. The aim of 2O2ACTIVATION is to develop novel technologies utilizing O2 as sole terminal oxidant in order to allow useful, extremely sustainable, thermodynamically challenging, dehydrogenative C-N and C-O bond forming coupling reactions. However, the moderate reactivity of O2 towards many catalysts constitutes a major challenge. 2O2ACTIVATION will pioneer the design of new catalysts based on the ultra-simple propene motive, capable of direct activation of O2 for C-H activation based cross-couplings. The project is divided into 3 major lines: O2 activation using propene and its analogues (propenoids), 1) without metal or halide, 2) with hypervalent halide catalysis, 3) with metal catalyzed C-H activation. The philosophy of 2O2ACTIVATION is to focus C-H functionalization method development on the oxidative event. Consequently, 2O2ACTIVATION breakthroughs will dramatically shortcut synthetic routes through the use of inactivated, unprotected, and readily available building blocks; and thus should be easily scalable. This will lead to a strong decrease in the costs related to the production of many essential chemicals, while preserving the environment (water as terminal by-product). The resulting novels coupling methods will thus have a lasting impact on the chemical industry.
Agency: European Commission | Branch: H2020 | Program: ERC-ADG | Phase: ERC-ADG-2015 | Award Amount: 2.44M | Year: 2016
I propose the opening of the new research field of room-temperature supercurrents formed in condensates of magnons. These supercurrents represent a novel type of macroscopic quantum phenomenon analogous to the low-temperature effects of superconductivity and superfluidity. They constitute the transport of angular momentum, which is driven by a phase gradient in the magnon-condensate wavefunction. The results I envision possess the potential to completely revolutionize information processing with minimum dissipation and in ambient conditions. Magnons are the quanta of spin waves, the dynamic eigen-excitations of a magnetically ordered body. Condensates of magnons relate to Bose-Einstein condensates, and they spontaneously form a spatially extended coherent ground state, which can be established independently of the magnon excitation mechanism and, most importantly, can be realized at room temperature. Magnon condensates and supercurrents will offer unprecedented opportunities to address novel, emergent, fundamental perspectives for the investigation of macroscopic quantum phenomena and their potential applications. SUPERMAGNONICS will pioneer the generation, processing and detection of magnonic supercurrents. I will specifically address the realization of magnonic Josephson junctions and the magnon version of the Aharonov-Casher effect where the phase of a magnon condensate and, thus, a persistent supercurrent, is controlled by an electric field. This approach will allow for fundamentally new means of magnon control. Experiments will be carried out using the unique technique of space-, phase- and time-resolved Brillouin Light Scattering spectroscopy for the imaging of the wavefunction of the condensates allowing for direct access to the supercurrent phenomena. In order to show the high potential for applications, I will demonstrate the functionality of a logic gate based on supercurrent wavefunction manipulation.
Agency: European Commission | Branch: H2020 | Program: ERC-ADG | Phase: ERC-ADG-2015 | Award Amount: 2.50M | Year: 2016
Techniques for separating fluid mixtures are important in many industries like the chemical and pharmaceutical industry. The most relevant of these separation techniques, like distillation and absorption, are based on mass transfer over fluid interfaces. Results from molecular thermodynamics, which have recently become available, show that for many industrially important mixtures a strong enrichment of components occurs at the fluid interface. There is a striking congruence between shortcomings of the present design methods for fluid separations and the occurrence of that enrichment. It is the central hypothesis of the present research that the enrichment leads to a mass transfer resistance of the fluid interface which has to be accounted for in fluid separation process design. The fact that it is presently neglected causes unnecessary empiricism and inconsistencies in the design. ENRICO will advance the knowledge on the enrichment of components at fluid interfaces using a novel combination of two independent theoretical methods, namely molecular simulations with force fields on one side and density gradient theory coupled with equations of state on the other. This will enable reliable predictions of the occurrence of the enrichment and its magnitude. These results will be combined with the theory of irreversible thermodynamics to establish for the first time a model for the mass transfer resistance of the interface due to the enrichment. On that basis, a new approach for designing fluid separation processes will be developed in ENRICO, which will lead to more efficient and robust designs. The theoretical results will be validated by experiments from laboratory to pilot plant scale, and the benefits of the new approach will be demonstrated. ENRICO will thus establish a link between molecular physics and engineering practice. The results from ENRICO will have a major impact on chemical engineering world-wide and change the way fluid separation processes are designed.
Kubik S.,University of Kaiserslautern
Chemical Society Reviews | Year: 2010
Anion recognition by synthetic receptors in water is not a new field, indeed the first receptors that were shown to interact with anionic species exhibited high affinity in aqueous solutions. Anion recognition in aqueous solution was, however, for a long time the domain of receptors containing multiple positive charges and/or metal ions while interactions of neutral receptors with anions were believed to be too weak to be efficient in water. Independent work in several groups has recently shown that this assumption is not necessarily correct. As a consequence, a much wider range of receptors is now available with which anion recognition in competitive aqueous media can be achieved. This tutorial review presents selected examples of synthetic anion receptors active in aqueous solutions and guidelines to achieve anion recognition in water. © 2010 The Royal Society of Chemistry.