Crosstalk Mitigation Techniques for Digital Subscriber Line Systems
Author: Monique Düngen
Publisher:
Published: 2016-03-11
Total Pages: 149
ISBN-13: 9783736992153
DOWNLOAD EBOOK →Author: Monique Düngen
Publisher:
Published: 2016-03-11
Total Pages: 149
ISBN-13: 9783736992153
DOWNLOAD EBOOK →Author: Monique Düngen
Publisher: Cuvillier Verlag
Published: 2016-03-11
Total Pages: 162
ISBN-13: 3736982151
DOWNLOAD EBOOK →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.
Author: Rainer Strobel
Publisher: Springer
Published: 2018-06-20
Total Pages: 211
ISBN-13: 3319915606
DOWNLOAD EBOOK →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.
Author:
Publisher: ScholarlyEditions
Published: 2012-01-09
Total Pages: 663
ISBN-13: 1464966494
DOWNLOAD EBOOK →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/.
Author: Philip Golden
Publisher: CRC Press
Published: 2007-10-26
Total Pages: 818
ISBN-13: 1420013076
DOWNLOAD EBOOK →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
Author: Chonggang Wang
Publisher: Springer Science & Business Media
Published: 2009-09-16
Total Pages: 482
ISBN-13: 3642046479
DOWNLOAD EBOOK →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.
Author: Lars Torsten Berger
Publisher: CRC Press
Published: 2017-12-19
Total Pages: 710
ISBN-13: 1466557532
DOWNLOAD EBOOK →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.
Author: David Y. Gao
Publisher: Springer Science & Business Media
Published: 2009-04-09
Total Pages: 520
ISBN-13: 0387757147
DOWNLOAD EBOOK →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.
Author:
Publisher: ScholarlyEditions
Published: 2012-01-09
Total Pages: 368
ISBN-13: 1464922039
DOWNLOAD EBOOK →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/.
Author: Roman Tzschoppe
Publisher:
Published: 2011
Total Pages: 283
ISBN-13: 9783832299101
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