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Author: Ruarob Tiyachate
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
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Book Description
Keywords: WDM, optical networks, survivability, protection, grooming.
Author: Ruarob Tiyachate
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
Get Book Here
Book Description
Keywords: WDM, optical networks, survivability, protection, grooming.
Author: Arun Somani
Publisher: Cambridge University Press
ISBN: 9781139448482
Category : Technology & Engineering
Languages : en
Pages : 468
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Book Description
The advent of fiber optic transmission systems and wavelength division multiplexing (WDM) have led to a dramatic increase in the usable bandwidth of single fiber systems. This book provides detailed coverage of survivability (dealing with the risk of losing large volumes of traffic data due to a failure of a node or a single fiber span) and traffic grooming (managing the increased complexity of smaller user requests over high capacity data pipes), both of which are key issues in modern optical networks. A framework is developed to deal with these problems in wide-area networks, where the topology used to service various high-bandwidth (but still small in relation to the capacity of the fiber) systems evolves toward making use of a general mesh. Effective solutions, exploiting complex optimization techniques, and heuristic methods are presented to keep network problems tractable. Newer networking technologies and efficient design methodologies are also described.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Optical networks have been widely expected to fill the need for tomorrow's backbone networks because of the high bandwidth and highly predictable performance they promise. However, in recent years, the downturn of the economy has made the deployment of costly equipment to obtain very high bandwidth less immediately attractive. In the current context, research must address these realistic conditions, and this is part of the motivation for the area in which the research in this thesis is performed. We propose a two-step approach to design, and show how this approach is suitable from both the grooming and the protection points of view. We adopt well-known heuristics from literature to perform stand-alone grooming and stand-alone protection at the virtual link level, enhancing the protection algorithm by adotping a failure independent routing but failure-specific wavelength assignment for protection virtual links. We show that in relative terms, the grooming performance of the protection design is already quite good due to this approach. However, protecting at the virtual link level invariably increases the grooming cost of the protection solution, and this cost can be significant at the node at which it is maximum. We go on to show how this can be countered by performing sub-wavelength protection. All our theoretical expectations are validated by numerical simulations. Our results are as follows. Subwavelength protection can effectively use unutilized capacity in existing virtual topology. Proposed protection results in protection solution with less total amount of electronic processing from both individual traffic component and overall traffic component point of view. Proposed algorithm not only decreases the amount of electronic processing from protection solution, but also decreases amount of virtual link setup for protection. The implementation of the two-phase approach help reduce the computation time to find an effective protection solution. Numerical results sho.
Author: Canhui (Sam) Ou
Publisher: Springer Science & Business Media
ISBN: 0387244999
Category : Technology & Engineering
Languages : en
Pages : 199
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Book Description
Covers these key topics: Shared-mesh protection for optical WDM networks. Survivable traffic grooming for hierarchical optical WDM networks. Survivable data over next-generation SONET/SDH with inverse multiplexing.
Author: Subir Bandyopadhyay
Publisher: Springer Science & Business Media
ISBN: 3540728759
Category : Technology & Engineering
Languages : en
Pages : 315
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Book Description
This book offers a broad overview of techniques used in the design of Wavelength Division Multiplexing (WDM) networks for efficient dissemination of information in computer networks. It starts with an overview of the hardware components then provides a thorough review of WDM. Each topic is covered rigorously with emphasis on detailed explanations of the approaches used. Numerous exercises are included.
Author: Rudra Dutta
Publisher: Springer Science & Business Media
ISBN: 0387745181
Category : Technology & Engineering
Languages : en
Pages : 300
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Book Description
This book presents the practical motivation, theoretical description, and extant techniques for traffic grooming in optical networks. The description of the various topics of research will be authored by leading researchers in this area, and will contain comprehensive description of related literature for each area. This book is intended to be a definitive reference and text for traffic grooming both for the practitioner in industry and the student in academia.
Author: Bijoy Chand Chatterjee
Publisher: Springer
ISBN: 3319462032
Category : Technology & Engineering
Languages : en
Pages : 128
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Book Description
This book presents an in-depth treatment of routing and wavelength assignment for optical networks, and focuses specifically on quality-of-service and fault resiliency issues. It reports on novel approaches for the development of routing and wavelength assignment schemes for fault-resilient optical networks, which improve their performance in terms of signal quality, call blocking, congestion level and reliability, without a substantial increase in network setup cost. The book first presents a solution for reducing the effect of the wavelength continuity constraint during the routing and wavelength assignment phase. Further, it reports on an approach allowing the incorporation of a traffic grooming mechanism with routing and wavelength assignment to enhance the effective channel utilization of a given capacity optical network using fewer electrical-optical-electrical conversions. As a third step, it addresses a quality of service provision scheme for wavelength-division multiplexing (WDM)-based optical networks. Lastly, the book describes the inclusion of a tree-based fault resilience scheme in priority-based dispersion-reduced wavelength assignment schemes for the purpose of improving network reliability, while maintaining a better utilization of network resources. Mainly intended for graduate students and researchers, the book provides them with extensive information on both fundamental and advanced technologies for routing and wavelength assignment in optical networks. The topics covered will also be of interest to network planners and designers.
Author: Arie Koster
Publisher: Springer Science & Business Media
ISBN: 3642022502
Category : Computers
Languages : en
Pages : 442
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Book Description
Algorithmic discrete mathematics plays a key role in the development of information and communication technologies, and methods that arise in computer science, mathematics and operations research – in particular in algorithms, computational complexity, distributed computing and optimization – are vital to modern services such as mobile telephony, online banking and VoIP. This book examines communication networking from a mathematical viewpoint. The contributing authors took part in the European COST action 293 – a four-year program of multidisciplinary research on this subject. In this book they offer introductory overviews and state-of-the-art assessments of current and future research in the fields of broadband, optical, wireless and ad hoc networks. Particular topics of interest are design, optimization, robustness and energy consumption. The book will be of interest to graduate students, researchers and practitioners in the areas of networking, theoretical computer science, operations research, distributed computing and mathematics.
Author: Antonio Laganà
Publisher: Springer
ISBN: 3540247076
Category : Computers
Languages : en
Pages : 1231
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Book Description
The natural mission of Computational Science is to tackle all sorts of human problems and to work out intelligent automata aimed at alleviating the b- den of working out suitable tools for solving complex problems. For this reason ComputationalScience,thoughoriginatingfromtheneedtosolvethemostch- lenging problems in science and engineering (computational science is the key player in the ?ght to gain fundamental advances in astronomy, biology, che- stry, environmental science, physics and several other scienti?c and engineering disciplines) is increasingly turning its attention to all ?elds of human activity. In all activities, in fact, intensive computation, information handling, kn- ledge synthesis, the use of ad-hoc devices, etc. increasingly need to be exploited and coordinated regardless of the location of both the users and the (various and heterogeneous) computing platforms. As a result the key to understanding the explosive growth of this discipline lies in two adjectives that more and more appropriately refer to Computational Science and its applications: interoperable and ubiquitous. Numerous examples of ubiquitous and interoperable tools and applicationsaregiveninthepresentfourLNCSvolumescontainingthecontri- tions delivered at the 2004 International Conference on Computational Science and its Applications (ICCSA 2004) held in Assisi, Italy, May 14–17, 2004.
Author: Khaled Elleithy
Publisher: Springer Science & Business Media
ISBN: 9048191513
Category : Technology & Engineering
Languages : en
Pages : 623
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Book Description
Technological Developments in Networking, Education and Automation includes a set of rigorously reviewed world-class manuscripts addressing and detailing state-of-the-art research projects in the following areas: Computer Networks: Access Technologies, Medium Access Control, Network architectures and Equipment, Optical Networks and Switching, Telecommunication Technology, and Ultra Wideband Communications. Engineering Education and Online Learning: including development of courses and systems for engineering, technical and liberal studies programs; online laboratories; intelligent testing using fuzzy logic; taxonomy of e-courses; and evaluation of online courses. Pedagogy: including benchmarking; group-learning; active learning; teaching of multiple subjects together; ontology; and knowledge management. Instruction Technology: including internet textbooks; virtual reality labs, instructional design, virtual models, pedagogy-oriented markup languages; graphic design possibilities; open source classroom management software; automatic email response systems; tablet-pcs; personalization using web mining technology; intelligent digital chalkboards; virtual room concepts for cooperative scientific work; and network technologies, management, and architecture. Coding and Modulation: Modeling and Simulation, OFDM technology , Space-time Coding, Spread Spectrum and CDMA Systems. Wireless technologies: Bluetooth , Cellular Wireless Networks, Cordless Systems and Wireless Local Loop, HIPERLAN, IEEE 802.11, Mobile Network Layer, Mobile Transport Layer, and Spread Spectrum. Network Security and applications: Authentication Applications, Block Ciphers Design Principles, Block Ciphers Modes of Operation, Electronic Mail Security, Encryption & Message Confidentiality, Firewalls, IP Security, Key Cryptography & Message Authentication, and Web Security. Robotics, Control Systems and Automation: Distributed Control Systems, Automation, Expert Systems, Robotics, Factory Automation, Intelligent Control Systems, Man Machine Interaction, Manufacturing Information System, Motion Control, and Process Automation. Vision Systems: for human action sensing, face recognition, and image processing algorithms for smoothing of high speed motion. Electronics and Power Systems: Actuators, Electro-Mechanical Systems, High Frequency Converters, Industrial Electronics, Motors and Drives, Power Converters, Power Devices and Components, and Power Electronics.
