Download or read book Crosstalk Mitigation Techniques for Digital Subscriber Line Systems written by Monique Düngen and published by . This book was released on 2016-03-11 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crosstalk Mitigation Techniques for Digital Subscriber Line Systems written by Monique Düngen and published by Cuvillier Verlag. This book was released on 2016-03-11 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: To allow DSL systems to support an always increasing amount of high-rate applications and run them stably, high data rates need to be guaranteed at a limited amount of computational complexity available for crosstalk mitigation. In this dissertation, first a channel estimation technique and channel adaptation procedures are presented as sufficiently accurate channel state information is the basis for many crosstalk reduction methods. The proposed techniques lead to increased performance of DSL systems. In the second and main part, crosstalk mitigation methods to fulfill data rate constraints in DSL networks are introduced. They achieve the high data rate targets at a low computational complexity. Die Übertragungsrate moderner DSL Systeme ist durch Übersprechen begrenzt, dennoch soll eine steigende Zahl von hochratigen Applikationen unterstützt werden. Um deren stabile Nutzung zu ermöglichen, müssen hohe Datenraten auch bei begrenztem Rechenaufwand für die Übersprechreduzierung garantiert werden. Diese Dissertation präsentiert zuerst leistungsfähige Techniken zur Kanalschätzung, da eine Kanalkenntnis für viele Reduktionsverfahren grundlegend ist. Im Hauptteil der Arbeit werden Methoden zur Reduzierung von Übersprechen gezeigt, mit denen Datenratenanforderungen in DSL Netzwerken erfüllt werden können. Sie erlauben ein Erreichen der Datenratenziele bei geringer benötigter Rechenkomplexität.
Download or read book Channel Modeling and Physical Layer Optimization in Copper Line Networks written by Rainer Strobel and published by Springer. This book was released on 2018-06-20 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates the physical layer aspects of high-speed transmission on twisted-pair copper wires, where the most performance-critical components are multi-input multi-output (MIMO) precoding and multi-line spectrum optimization as well as optimized scheduling of the transmission time slots on the fiber to the distribution point (FTTdp) copper link. The book brings theoretical results into the implementation, which requires the introduction of realistic channel models and more practical implementation constraints as found in the copper access network. A good understanding of the transmission medium, twisted-pair telephone cable bundles is the basis for this work. Starting from the analysis of measurement data from twisted-pair cable bundles at high frequencies, it presents a MIMO channel model for the FTTdp network, which allows the characteristic effects of high-frequency transmission on copper cable bundles in simulation to be reproduced and the physical layer transmission methods on the copper channels to be analyzed and optimize. The book also presents precoding optimization for more general power constraints and implementation constraints. The maximization of data rate in a transmission system such as G.fast or VDSL is a combinatorial problem, as the rate is a discrete function of the number of modulated bits. Applying convex optimization methods to the problem offers an efficient and effective solution approach that is proven to operate close to the capacity of the FTTdp channel. In addition to higher data rates, low power consumption is another important aspect of the FTTdp network, as it requires many access nodes that are supplied with power from the subscriber side over the twisted- pair copper wires. Discontinuous operation is a method of quickly adding and removing lines from the precoding group. To implement this, the system switches between different link configurations over time at a high frequency. The transmission times of all lines are jointly optimized with respect to the current rate requirements. Discontinuous operation is used to save power, but also makes it possible to further increase the data rates, taking the current subscriber traffic requirements into account. These methods are compared with theoretical upper bounds, using realistic channel models and conditions of a system implementation. The performance analysis provides deeper insights into implementation complexity trade-offs and the resulting gap to channel capacity.
Download or read book Analysis of Crosstalk in Twisted pair Cable Binders for Digital Subscriber Line Applications written by Wenqian Han and published by . This book was released on 2006 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis combines the statistical analysis along with the deterministic electromagnetic theory to study both the Near-End Crosstalk (NEXT) and Far-End Crosstalk (FEXT) under geometric non-uniformities in cable binders. Further, a Thevenin equivalent based MTL method is extended from the Multi-conductor Transmission Line (MTL) theory to model crosstalk in a heterogeneous Digital Subscriber Line (DSL) system including a transition from a segment of optical fiber to twisted-pair copper lines. The proposed method based on the Thevenin representation is first developed and subsequently validated. Then the proposed method is employed for the characterization of crosstalk, incorporating geometric cable non-uniformities in the heterogeneous DSL system. Finally, the proposed method is compared with the conventionally used Power Sum Loss (PSL) model to illustrate its significant improvement in crosstalk estimation and hence its importance for Dynamic Spectrum Management (DSM) in the future heterogeneous DSL systems.
Download or read book Issues in Telecommunications Research 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Telecommunications Research / 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Telecommunications Research. The editors have built Issues in Telecommunications Research: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Telecommunications Research in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Telecommunications Research: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Implementation and Applications of DSL Technology written by Philip Golden and published by CRC Press. This book was released on 2007-10-26 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: The digital subscriber line (DSL) industry is expanding rapidly and a technology once thought to be only transitional will soon clear $100 billion in total annual service revenue. From the world's leading DSL experts, Implementation and Application of DSL Technologies builds upon the theory presented in Fundamentals of DSL Technologies
Download or read book Access Nets written by Chonggang Wang and published by Springer Science & Business Media. This book was released on 2009-09-16 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: The annual International Conference on Access Networks (AccessNets) aims to provide a forum that brings together researchers and scientists from academia as well as man- ers and engineers from industry to meet and exchange ideas and recent work on all aspects of access networks. AccessNets 2008 was the third edition of this event, which was successfully held in Las Vegas, Nevada, USA, during October 15–17, 2008. The conference consisted of two keynote addresses, five invited talks, seven technical sessions, and two panel sessions. Leonid Kazovsky from Stanford University and Kevin Schneider, Chief Technology Officer of ADTRAN, delivered their exciting keynote - dresses on “Future Evolution of Broadband Access,” and “Carrier Ethernet and the Evo- ing Access Networks,” respectively. Maurice Gagnaire, Martin Reisslein, Martin Maier, Paolo Giacomazzi, and John M. Cioffi gave interesting invited talks on different research topics on access networks. The technical papers presented original and fundamental - search advances in the area of access networks, while the panels focused on the interesting topics of “Fiber Assisted Wireless for Broadband Access Networks and Dynamic Spectrum Management (DSM) Successes. ” These conference proceedings include all the technical papers that were presented at AccessNets 2008. We hope that it will become a useful reference for researchers and practitioners working in the area of access networks.
Download or read book MIMO Power Line Communications written by Lars Torsten Berger and published by CRC Press. This book was released on 2017-12-19 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the first publications of its kind in the exciting field of multiple input multiple output (MIMO) power line communications (PLC), MIMO Power Line Communications: Narrow and Broadband Standards, EMC, and Advanced Processing contains contributions from experts in industry and academia, making it practical enough to provide a solid understanding of how PLC technologies work, yet scientific enough to form a base for ongoing R&D activities. This book is subdivided into five thematic parts. Part I looks at narrow- and broadband channel characterization based on measurements from around the globe. Taking into account current regulations and electromagnetic compatibility (EMC), part II describes MIMO signal processing strategies and related capacity and throughput estimates. Current narrow- and broadband PLC standards and specifications are described in the various chapters of part III. Advanced PLC processing options are treated in part IV, drawing from a wide variety of research areas such as beamforming/precoding, time reversal, multi-user processing, and relaying. Lastly, part V contains case studies and field trials, where the advanced technologies of tomorrow are put into practice today. Suitable as a reference or a handbook, MIMO Power Line Communications: Narrow and Broadband Standards, EMC, and Advanced Processing features self-contained chapters with extensive cross-referencing to allow for a flexible reading path.
Download or read book Advances in Applied Mathematics and Global Optimization written by David Y. Gao and published by Springer Science & Business Media. This book was released on 2009-04-09 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: The articles that comprise this distinguished annual volume for the Advances in Mechanics and Mathematics series have been written in honor of Gilbert Strang, a world renowned mathematician and exceptional person. Written by leading experts in complementarity, duality, global optimization, and quantum computations, this collection reveals the beauty of these mathematical disciplines and investigates recent developments in global optimization, nonconvex and nonsmooth analysis, nonlinear programming, theoretical and engineering mechanics, large scale computation, quantum algorithms and computation, and information theory.
Download or read book Algorithms Advances in Research and Application 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Algorithms: Advances in Research and Application: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Algorithms. The editors have built Algorithms: Advances in Research and Application: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Algorithms in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Algorithms: Advances in Research and Application: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Trends in Developing Metaheuristics Algorithms and Optimization Approaches written by Yin, Peng-Yeng and published by IGI Global. This book was released on 2012-10-31 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developments in metaheuristics continue to advance computation beyond its traditional methods. With groundwork built on multidisciplinary research findings; metaheuristics, algorithms, and optimization approaches uses memory manipulations in order to take full advantage of strategic level problem solving. Trends in Developing Metaheuristics, Algorithms, and Optimization Approaches provides insight on the latest advances and analysis of technologies in metaheuristics computing. Offering widespread coverage on topics such as genetic algorithms, differential evolution, and ant colony optimization, this book aims to be a forum researchers, practitioners, and students who wish to learn and apply metaheuristic computing.
Download or read book Conference Proceedings written by and published by . This book was released on 2003 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Topics in Measurements written by Md. Zahurul Haq and published by BoD – Books on Demand. This book was released on 2012-03-07 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurement is a multidisciplinary experimental science. Measurement systems synergistically blend science, engineering and statistical methods to provide fundamental data for research, design and development, control of processes and operations, and facilitate safe and economic performance of systems. In recent years, measuring techniques have expanded rapidly and gained maturity, through extensive research activities and hardware advancements. With individual chapters authored by eminent professionals in their respective topics, Advanced Topics in Measurements attempts to provide a comprehensive presentation and in-depth guidance on some of the key applied and advanced topics in measurements for scientists, engineers and educators.
Download or read book Applications of Digital Signal Processing written by Christian Cuadrado-Laborde and published by BoD – Books on Demand. This book was released on 2011-11-23 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book the reader will find a collection of chapters authored/co-authored by a large number of experts around the world, covering the broad field of digital signal processing. This book intends to provide highlights of the current research in the digital signal processing area, showing the recent advances in this field. This work is mainly destined to researchers in the digital signal processing and related areas but it is also accessible to anyone with a scientific background desiring to have an up-to-date overview of this domain. Each chapter is self-contained and can be read independently of the others. These nineteenth chapters present methodological advances and recent applications of digital signal processing in various domains as communications, filtering, medicine, astronomy, and image processing.
Download or read book Crosstalk Cancellation for Digital Subscriber Lines DSL written by Roman Tzschoppe and published by . This book was released on 2011 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Issues in Electronics Research and Application 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-05-01 with total page 1911 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Electronics Research and Application: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Radar and Sonar Research. The editors have built Issues in Electronics Research and Application: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Radar and Sonar Research in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Electronics Research and Application: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2005 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:
