Book ChapterDOI
Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks
Konstantinos Christodoulopoulos
- pp 491-500
TLDR
This work introduces the Routing, Modulation Level and Spectrum Allocation (RMLSA) problem, as opposed to the typical Routing and Wavelength Assignment (RWA) problem of traditional WDM networks, proves that it is also NP-complete and presents various algorithms to solve it.Abstract:
Orthogonal Frequency Division Multiplexing (OFDM) has recently been proposed as a modulation technique for optical networks, because of its good spectral efficiency, flexibility, and tolerance to impairments. We consider the planning problem of an OFDM optical network, where connections are provisioned for their requested rate by elastically allocating spectrum using a variable number of OFDM subcarriers and choosing an appropriate modulation level taking into account the transmission distance. Using algorithms developed in our previous works, we evaluate the spectrum utilization gains that can be obtained by utilizing the elastic bandwidth allocation of OFDM, when compared to a traditional WDM network.read more
Citations
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Journal ArticleDOI
Routing and Spectrum Allocation in Elastic Optical Networks: A Tutorial
TL;DR: A tutorial that covers the key aspects of elastic optical networks, and explores the experimental demonstrations that have tested the functionality of the elastic optical network, along with the research challenges and open issues posed by flexible networks.
Journal ArticleDOI
Dynamic Service Provisioning in Elastic Optical Networks With Hybrid Single-/Multi-Path Routing
TL;DR: The simulation results have demonstrated that the proposed HSMR schemes can effectively reduce the bandwidth blocking probability (BBP) of dynamic RMSA, as compared to two benchmark algorithms that use single-path routing and split spectrum.
Journal ArticleDOI
A Survey on OFDM-Based Elastic Core Optical Networking
TL;DR: A novel elastic optical network architecture with immense flexibility and scalability in spectrum allocation and data rate accommodation could be built to support diverse services and the rapid growth of Internet traffic in the future.
Journal ArticleDOI
Survey: Live Migration and Disaster Recovery over Long-Distance Networks
TL;DR: The way LM and DR are currently being performed and their operation in long-distance networking environments are presented, discussing related issues and bottlenecks and surveying other works.
Journal ArticleDOI
From Scaling Disparities to Integrated Parallelism: A Decathlon for a Decade
Peter J. Winzer,David T. Neilson +1 more
TL;DR: The identification of fundamental scaling disparities between the technologies used to generate and process data and those used to transport data could lead to the data transport network falling behind its required capabilities by a factor of approximately 4 every five years, leading to an optical network capacity crunch.
References
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Journal ArticleDOI
OFDM for Optical Communications
TL;DR: In this paper, the authors give a tutorial overview of OFDM and highlight the aspects that are likely to be important in optical applications, and discuss the constraints imposed by single mode optical fiber, multimode optical fiber and optical wireless.
Journal ArticleDOI
Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies
Masahiko Jinno,Hidehiko Takara,Bartlomiej Kozicki,Yukio Tsukishima,Yoshiaki Sone,Shinji Matsuoka +5 more
TL;DR: This article proposes a novel, spectrum- efficient, and scalable optical transport network architecture called SLICE, which enables sub-wavelength, superwa wavelength, and multiple-rate data traffic accommodation in a highly spectrum-efficient manner, thereby providing a fractional bandwidth service.
Journal ArticleDOI
Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network [Topics in Optical Communications]
Masahiko Jinno,Bartlomiej Kozicki,Hidehiko Takara,Atsushi Watanabe,Yoshiaki Sone,Takafumi Tanaka,Akira Hirano +6 more
TL;DR: A concept of a novel adaptation scheme in SLICE called distance-adaptive spectrum resource allocation, which can save more than 45 percent of required spectrum resources for a 12-node ring network, is presented.
Journal ArticleDOI
Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks
TL;DR: This work introduces the Routing, Modulation Level and Spectrum Allocation (RMLSA) problem, as opposed to the typical Routing and Wavelength Assignment (RWA) problem of traditional WDM networks, proves that it is also NP-complete and presents various algorithms to solve it.