Record:   Prev Next
作者 Aparicio Pardo, Ramon
書名 Optimization and Planning of WDM Transparent Optical Networks
國際標準書號 9781267143365
book jacket
說明 211 p
附註 Source: Dissertation Abstracts International, Volume: 73-05, Section: B, page: 3027
Adviser: Pablo Pavon Marino
Thesis (Dr.)--Universidad Politecnica de Cartagena (Spain), 2011
The present thesis contributes in the field of the optimization and planning of WDM transparent optical networks. Transparent optical networks based on wavelength division multiplexing (WDM) are the enabling technology for high-speed backbone networks. In transparent networks, traffic is carried over all-optical connections, called lightpaths. A lightpath originates at an optical transmitter and terminates at an optical receiver, occupying a single wavelength channel in each traversed link. Since the traffic carried over a lightpath is not processed electronically at intermediate nodes, savings with respect to electronic switching equipment can be achieved. The particular set of lightpaths established over the physical topology constitutes the so-called virtual topology. The network planning in these networks implies solving a multilayer optimization problem named Virtual Topology Design (VTD): in the upper layer, electronic traffic demands are routed over the virtual topology; whereas, in the lower layer, each lightpath in the virtual topology is routed over the physical network topology and assigned to a wavelength
In the present thesis, three problems in transparent optical networks are investigated using methodology previously mentioned: (a) Static Multifiber Planning, (b) Static Physical Layer Impairment Aware (PLIA) Planning, and (c) Multihour Planning. Some interesting conclusions are extracted about the best network configurations to minimize the network costs and about the cost tradeoffs among them
Chapter 2 describes the contribution of the present thesis to the research in the multifiber planning, i.e., more than one fiber can be activated in the links between two nodes. Chapter 3 develops the main contributions of the present thesis in Physical Layer Aware Planning (PLIA) planning , that is, when physical layer considerations are introduced in the planning of WDM networks. Chapter 4 details the contributions of this thesis to the multihour planning in optical WDM networks. In contrast to the two previous problems where the traffic was considered constant along time; in multihour planning, the traffic changes following a periodical variation assumed to be accurately known in advance. Finally, Chapter 5 concludes the thesis, summarizing the main results, as well as, suggesting possible future research lines
School code: 1426
Host Item Dissertation Abstracts International 73-05B
主題 Applied Mathematics
Operations Research
Computer Science
Alt Author Universidad Politecnica de Cartagena (Spain). Tecnologias de la Informacion y las Comunicaciones
Record:   Prev Next