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arXiv 2020年

作者： Rajatheva, Nandana Atzeni, Italo Björnson, Emil Bourdoux, André Buzzi, Stefano Doré, Jean-Baptiste Erkucuk, Serhat Fuentes, Manuel Guan, Ke Hu, Yuzhou Huang, Xiaojing Hulkkonen, Jari Jornet, Josep Miquel Katz, Marcos Nilsson, Rickard Panayirci, Erdal Rabie, Khaled Rajapaksha, Nuwanthika Salehi, MohammadJavad Sarieddeen, Hadi Svensson, Tommy Tervo, Oskari Tölli, Antti Wu, Qingqing Xu, Wen Centre for Wireless Communications University of Oulu Finland Linköping University Sweden IMEC Belgium Department of Electrical and Information Engineering University of Cassino and Southern Latium Italy CEA-Leti France Department of Electrical and Electronics Engineering Kadir Has University Turkey Institute of Telecommunications and Multimedia Applications Universitat Politecnica de Valencia Spain State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing Engineering Research Center of High-speed Railway Broadband Mobile Communications China Algorithm Department ZTE Corporation China School of Electrical and Data Engineering Faculty of Engineering and Information Technology University of Technology Sydney Australia Nokia Bell Labs Finland Department of Electrical and Computer Engineering Institute for the Wireless Internet of Things Northeastern University United States Department of Computer Science Electrical and Space Engineering Luleå University of Technology Sweden Department of Engineering Manchester Metropolitan University United Kingdom Division of Computer Electrical and Mathematical Sciences and Engineering King Abdullah University of Science and Technology Saudi Arabia Department of Electrical Engineering Chalmers University of Technology Sweden Department of Electrical and Computer Engineering National University of Singapore Singapore Huawei Technologies Germany

This white paper explores the road to implementing broadband connectivity in future 6G wireless systems. Different categories of use cases are considered, from extreme capacity with peak data rates up to 1 Tbps, to raising the typical data rates by orders-of-magnitude, to support broadband connectivity at railway speeds up to 1000 km/h. To achieve these goals, not only the terrestrial networks will be evolved but they will also be integrated with satellite networks, all facilitating autonomous systems and various interconnected structures. We believe that several categories of enablers at the infrastructure, spectrum, and protocol/algorithmic levels are required to realize the intended broadband connectivity goals in 6G. At the infrastructure level, we consider ultra-massive MIMO technology (possibly implemented using holographic radio), intelligent reflecting surfaces, user-centric and scalable cell-free networking, integrated access and backhaul, and integrated space and terrestrial networks. At the spectrum level, the network must seamlessly utilize sub-6 GHz bands for coverage and spatial multiplexing of many devices, while higher bands will be used for pushing the peak rates of point-to-point links. The latter path will lead to THz communications complemented by visible light communications in specific scenarios. At the protocol/algorithmic level, the enablers include improved coding, modulation, and waveforms to achieve lower latencies, higher reliability, and reduced complexity. Different options will be needed to optimally support different use cases. The resource efficiency can be further improved by using various combinations of full-duplex radios, interference management based on rate-splitting, machine-learning-based optimization, coded caching, and broadcasting. Finally, the three levels of enablers must be utilized not only to deliver better broadband services in urban areas, but also to provide full-coverage broadband connectivity must be one of the k

关键词： Visible light communication

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Fuzzing the Linux Kernel

Fuzzing the Linux Kernel

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Computing Conference

作者： Costin Carabas Mihai Carabas Faculty of Automatic Control and Computer Science University "POLITEHNICA" of Bucharest

ISBN: (纸本)9781509054442

The development of Linux is one of the most prominent examples of free and open-source software collaboration. The kernel is used in many projects including Android which has over 82% in market share worldwide. Therefore, Linux's kernel security has a lot of impact on IT&C industry. This paper presents an audit solution over the Linux kernel in order to discover security vulnerabilities. Therefore, fuzzing campaigns are performed through system calls. This choice was made due to the fact that system calls are the natural way user space communicates with the kernel space and a real life scenario can be reproduced.

关键词： Security Fuzzing Linux Kernel

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Brain activation and cognitive load during EEG measured creativity tasks accompanied by relaxation music

Brain activation and cognitive load during EEG measured crea...

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2017 International Conference on computer-Human Interaction Research and Applications, CHIRA 2017

作者： Papuc, Dalia Bălan, Oana Dascălu, Maria-Iuliana Moldoveanu, Alin Morar, Anca University Politehnica of Bucharest Faculty of Engineering in Foreign Languages Splaiul Independentei Bucharest313 Romania University Politehnica of Bucharest Faculty of Automatic Control and Computer Science Splaiul Independentei Bucharest313 Romania

ISBN: (纸本)9789897582677

Creativity tasks require specific imagery, memory and semantic processes, as it has been revealed by various neuroscientific studies. There is significant evidence that an increase of spectral power in the EEG alpha band is inter-related with creative ideation as a form of top-down activity. However, any creational task demands a certain level of cognitive load or workload for memory retrieval, mental schemes design, semantic processing, image formation and concept construct. This paper aims to measure cognitive load during a series of divergent thinking creative tasks accompanied by relaxation music, to examine event-related brain activation and raw power measures in the baseline relaxation, alternate uses creative and verbalization stages of the proposed experimental procedure, as well as to study task-related synchronization/desynchronization between these phases. Also, its purpose is to verify whether slow relaxing music influences creativity, with effects in the brainwaves amplitude variations, especially in the alpha (8-12 Hz) frequency band. We concluded that relaxing music induces creativity and causes an increase in the alpha brain waves for innovative ideas generation and verbalization with a diminished level of cognitive load. Copyright © by SCITEPRESS - science and Technology Publications, Lda. All rights reserved

关键词： Neurophysiology

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VLAN-PSSR: Port-switching based Source Routing using VLAN tags in SDN data centers

UPB Scientific Bulletin, Series C: Electrical Engineering an...

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UPB Scientific Bulletin, Series C: Electrical Engineering and computer science 2017年第2期79卷 15-24页

作者： Poncea, Ovidiu Mihai Moldoveanu, Florica Asavei, Victor Dept of Computer Science and Engineering Faculty of Automatic Control and Computers University POLITEHNICA of Bucharest Romania

Source Routing allows a node in the path of a packet to specify partially or completely the route taken by that packet. The route is appended to packet header as a list of nodes to traverse, therefore making simple, stateless forwarding decisions. In this paper, we present a novel approach of Source Routing in SDN that uses stacked VLAN tags. Our solution was validated in Mininet using the Ryu controller and proven to have multiple advantages over other forwarding methods.

关键词： Mininet Networking SDN Source Routing VLAN

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Scoring the terabit/s goal: Broadband connectivity in 6G

arXiv

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arXiv 2020年

作者： Rajatheva, Nandana Atzeni, Italo Bicaïs, Simon Björnson, Emil Bourdoux, André Buzzi, Stefano D'Andrea, Carmen Doré, Jean-Baptiste Erkucuk, Serhat Fuentes, Manuel Guan, Ke Hu, Yuzhou Huang, Xiaojing Hulkkonen, Jari Jornet, Josep Miquel Katz, Marcos Makki, Behrooz Nilsson, Rickard Panayirci, Erdal Rabie, Khaled Rajapaksha, Nuwanthika Salehi, Mohammadjavad Sarieddeen, Hadi Shahabuddin, Shahriar Svensson, Tommy Tervo, Oskari Tölli, Antti Wu, Qingqing Xu, Wen Centre for Wireless Communications University of Oulu Finland CEA-Leti France KTH Royal Institute of Technology Sweden Linköping University Sweden IMEC Belgium University of Cassino and Southern Latium Italy Italy Department of Electrical and Electronics Engineering Kadir Has University Turkey Fivecomm Valencia Spain State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University China The Beijing Engineering Research Center of High-Speed Railway Broadband Mobile Communications China Algorithm Department ZTE Corporation China School of Electrical and Data Engineering Faculty of Engineering and Information Technology University of Technology Sydney Australia Nokia Bell Labs Finland Institute for the Wireless Internet of Things Department of Electrical and Computer Engineering Northeastern University United States Ericsson Research Gothenburg Sweden Department of Computer Science Electrical and Space Engineering Luleå University of Technology Sweden Department of Engineering Manchester Metropolitan University United Kingdom Division of Computer Electrical and Mathematical Sciences and Engineering King Abdullah University of Science and Technology Saudi Arabia Nokia Finland Department of Electrical Engineering Chalmers University of Technology Sweden State Key Laboratory of Internet of Things for Smart City Department of Electrical and Computer Engineering University of Macau China Huawei Technologies Germany

This paper explores the road to vastly improving the broadband connectivity in future 6G wireless systems. Different categories of use cases are considered, with peak data rates up to 1 Tbps. Several categories of enablers at the infrastructure, spectrum, and protocol/algorithmic levels are required to realize the intended broadband connectivity goals in 6G. At the infrastructure level, we consider ultra-massive MIMO technology (possibly implemented using holographic radio), intelligent reflecting surfaces, user-centric cell-free networking, integrated access and backhaul, and integrated space and terrestrial networks. At the spectrum level, the network must seamlessly utilize sub-6 GHz bands for coverage and spatial multiplexing of many devices, while higher bands will be mainly used for pushing the peak rates of point-to-point links. Finally, at the protocol/algorithmic level, the enablers include improved coding, modulation, and waveforms to achieve lower latency, higher reliability, and reduced complexity. © 2020, CC BY.

关键词： MIMO systems

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LED Smart Illumination with RFID Indoor Positioning

LED Smart Illumination with RFID Indoor Positioning

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International Conference on control Systems and computer science (CSCS)

作者： Dorian Floarea Valentin Sgârciu Faculty of Automatic Control and Computer Science University POLITEHNICA of Bucharest Bucharest Romania

ISBN: (纸本)9781538618400

There are already plenty of Internet of Things (IoT) architectures and systems available worldwide and this creates challenges for software development and systems entities that use these platforms. Global visibility and interoperability through the exposure of these platforms via the web can be achieved through a new paradigm to support an open framework for Web of Things (WoT), which is analogous to web pages. Thus, real-world objects and cloud services could interact via the web. This paper presents the concept of an intelligent lighting system designed in an architectural style based on the Representational State Transfer (REST) web technology and provides intelligent illumination based on Radio-Frequency Identification (RFID) technology.

关键词： Radiofrequency identification Lighting Light emitting diodes Software Standards Buildings Servers

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Classification of an imbalanced data set using decision tree algorithms

UPB Scientific Bulletin, Series C: Electrical Engineering an...

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UPB Scientific Bulletin, Series C: Electrical Engineering and computer science 2017年第4期79卷 69-84页

作者： Truicǎ, Ciprian-Octavian Leordeanu, Cǎtǎlin Adrian Computer Science and Engineering Department Faculty of Automatic Control and Computers University Politehnica of Bucharest Bucharest Romania

Machine learning algorithms have recently become very popular for different tasks involving data analysis, classification or prediction. They can provide valuable knowledge for very large sets of data and can reach very good accuracy. However, most algorithms are sensitive to the nature of the data sets, as well as different calibrations which can lead to large differences in performance, accuracy or false positives. In this paper, a classification solution for imbalanced data sets containing information about defects of various trees is presented. The experimental results present a comparison that evaluates the classification performance of the Decision Tree, Random Forest, and Extremely Randomized Trees classifiers. The measures used in the comparison take into account weighted accuracy, precision, and recall for binary and multi-class classification.

关键词： Classification (of information)

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Image quality parameters in application of compressed sensing for MRI data

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AIP Conference Proceedings 2018年第1期1978卷

作者： Michał Staniszewski Silesian University of Technology Faculty of Automatic Control Electronics and Computer Science Institute of Informatics Akademicka 16 Gliwice Poland

The acceleration of Magnetic Resonance Imaging techniques is still very important in current development. The application of Compressed Sensing for medical data accelerates the acquisition time and satisfies the image quality. The method relies on the sparsity condition and requires only the most important data instead of acquiring all data according to the Nyquist-Shannon sampling theorem. The paper shows the application of different image quality parameters in order to compare the original method of Compressed Sensing for phantom and medical data.

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A lower bound on the separation between two solutions of a scalar Riemann-Liouville fractional differential equation

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AIP Conference Proceedings 2019年第1期2116卷

作者： Anh Pham The Piotr Jurgaś Michał Niezabitowski c) Tuan Hoang The 1Le Quy Don Technical University Faculty of Information Technology 236 Hoang Quoc Viet Ha noi Viet nam 2Silesian University of Technology Faculty of Automatic Control Electronics and Computer Science Institute of Automatic Control Akademicka 16 44-100 Gliwice Poland 3University of Silesia Faculty of Mathematics Physics and Chemistry Institute of Mathematics Bankowa 14 40-007 Katowice Poland 4Vietnam Academy of Science and Technology Institute of Mathematics 18 Hoang Quoc Viet Ha noi Viet nam

In this paper, we establish a lower bound on the separation between two distinct solutions of a scalar Riemann-Liouville fractional differential equation. As a consequence, we show that the Lyapunov exponent of an arbitrary non-trivial solution of a bounded linear scalar Riemann-Liouville fractional differential equation is always non-negative.

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Method of programming of sequential control systems using LabVIEW environment

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IFAC-PapersOnLine 2016年第25期49卷 476-481页

作者： Wcislik, Miroslaw Suchenia, Karol Laskawski, Michal S. Faculty of Electric Engineering Automatic Control and Computer Science Kielce University of Technology Poland

The paper deals with the new methodology of programming of sequential control systems in Lab VIEW language. By similarity to the SFC language and use of only a few defined blocks and connections, the proposed approach makes it easy to construct and analyze program of control system. The methodology uses only basic elements of the Lab VIEW language. That is why it may be used in wide variety of control devices including FPGA. © 2016

关键词： control systems Flip flop circuits Block diagrams decoders Graphical languages LabViEW Sequence control

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