Results 71 to 80 of about 261 (83)
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On solving the capacitated routing and spectrum allocation problem for flexgrid optical networks
Computer Networks, 2020Abstract The elastic optical networks, a.k.a., flexgrid networks, have flexible spectrum allocation. Such flexibility is possible due to the division of the spectrum into narrow frequency slots and the use of bandwidth-variable transponders. This enables the demand, in terms of band request, to be contiguously allocated starting from any available ...
Carlos M. Araújo +3 more
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CAPEX Study for a Multilayer IP/MPLS-Over-Flexgrid Optical Network
Journal of Optical Communications and Networking, 2012The ever-increasing Internet Protocol (IP) traffic volume has finally brought to light the high inefficiency of current wavelength-routed over rigid-grid optical networks in matching the client layer requirements. Such an issue results in the deployment of large-size, expensive, and power-consuming IP/Multi-Protocol Label Switching (MPLS) layers to ...
Oscar Pedrola +5 more
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Optical Fiber Communication Conference, 2018
We focus on translucent flexgrid optical networks with flexible back-to-back regeneration and analyze the impact of the number of available transceivers on network performance for several proposed transceiver location methods and dynamic routing algorithms.
Krzysztof Walkowiak, Miroslaw Klinkowski
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We focus on translucent flexgrid optical networks with flexible back-to-back regeneration and analyze the impact of the number of available transceivers on network performance for several proposed transceiver location methods and dynamic routing algorithms.
Krzysztof Walkowiak, Miroslaw Klinkowski
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Flexgrid optical networks design under multiple modulation formats
2014 International Telecommunications Symposium (ITS), 2014This paper proposes an MILP (Mixed Integer Linear Programming) formulation for the design of flexgrid optical networks under multiple modulation formats and noise constraints. The proposed MILP benefits from the flexibility of using multiple modulation formats, each of which with its spectrum efficiency and individual noise constraints, to properly ...
K. D. R. Assis +4 more
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Cognition-enabling techniques in heterogeneous and flexgrid optical communication networks
SPIE Proceedings, 2012High degree of heterogeneity of future optical networks, such as services with different quality-of-transmission requirements, modulation formats and switching techniques, will pose a challenge for the control and optimization of different parameters.
Monroy I.T. +3 more
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Effect of frequency granularity and Link Margin at 100G and beyond Flexgrid Optical Networks
2014 Twentieth National Conference on Communications (NCC), 2014The core network traffic has been increasing with the evolution of multimedia applications, rise in cloud computing and data centres. This has lead to wide heterogeneity of demands of more than 100Gbps which the current fixed grid network cannot handle.
Abhijit Mitra, Subrat Kar, Andrew Lord
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2014 16th International Conference on Transparent Optical Networks (ICTON), 2014
Flexible optical network (FON) architectures are considered a very promising solution where spectrum resources are allocated within flexible frequency grids. Routing and spectrum allocation (RSA) in FON is known to be an NP-complete problem. So far, this problem has been optimally solved for small instances by the application of integer linear ...
Fernando Lezama +3 more
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Flexible optical network (FON) architectures are considered a very promising solution where spectrum resources are allocated within flexible frequency grids. Routing and spectrum allocation (RSA) in FON is known to be an NP-complete problem. So far, this problem has been optimally solved for small instances by the application of integer linear ...
Fernando Lezama +3 more
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Alternative routing and zone-based spectrum assignment algorithm for flexgrid optical networks
2014 IEEE International Conference on Communications (ICC), 2014In optical flexgrid networks, the optical spectrum can be allocated at a much finer granularity than it can be in fixed-grid WDM networks and variable spectrum widths can be assigned to the lightpaths according to the transmission rates, leading to more efficient spectrum usage.
Rafael Augusto Scaraficci +1 more
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Transmission - aware multiple lightpath reconfiguration in flexgrid optical networks
Metro and Data Center Optical Networks and Short-Reach Links V, 2022Dmitry Khomchenko +2 more
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Spectrum defragmentation in flexgrid optical networks using a genetic algorithm
International Journal of Communication Systems, 2015Shanguo Huang
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