Multi-band OFDM for optical networking

Blouza, Sofiene; Karaki, Julie; Brochier, Nicolas; Rouzic, Esther Le; Pincemin, Erwan; Cousin, Bernard

doi:10.1109/eurocon.2011.5929191

Cited by 14 publications

(4 citation statements)

References 11 publications

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“…Non-contiguous assignment is more flexible but may increase total guardband overhead. There may be subcarrier converters [10] in the network; at a subcarrier converter, a whole band of subcarriers assigned to a connection on the incoming link can be converted to another band of subcarriers on the outgoing link.…”

Section: B Oofdmmentioning

confidence: 99%

Virtual topology mapping in elastic optical networks

Zhao

Subramaniam

Brandt-Pearce

2013

2013 IEEE International Conference on Communications (ICC)

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Virtualization improves the efficiency of networks by allowing multiple virtual networks to share a single physical network's resources. Next-generation optical transport networks are expected to support virtualization by accommodating multiple virtual networks with different topologies and bit rate requirements. Meanwhile, Optical Orthogonal Frequency-Division Multiplexing (OOFDM) is emerging as a viable technique for efficiently using the optical fiber's bandwidth in an elastic manner. OOFDM partitions the fiber's bandwidth into hundreds or even thousands of OFDM subcarriers that may be allocated to services. In this paper, we consider an OOFDM-based optical network and formulate a virtual network mapping problem for both static and dynamic traffic. This problem has several natural applications, such as e-Science, Grid, and cloud computing. The objective for static traffic is to maximize the subcarrier utilization, while minimizing the blocking ratio is the aim for dynamic traffic. Two heuristics are proposed and compared. Simulation results are presented to demonstrate the effectiveness of the proposed approaches.

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Section: B Oofdmmentioning

confidence: 99%

Virtual topology mapping in elastic optical networks

Zhao

Subramaniam

Brandt-Pearce

2013

2013 IEEE International Conference on Communications (ICC)

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“…The OFDM make use of a sophisticated divide-and-conquer methodology to transmit high speed frequency-selective channels. 23 It is a multicarrier block modulation scheme wherein the whole available bandwidth is divided into different sequence of symbols of low data rates and then modulated simultaneously by multiple partially overlapped subcarriers which are orthogonal to each other and transmitted in parallel form to achieve high aggregate data rates and bandwidth efficiency. Flat frequency response is generated in individual sub-carriers with constricted bandwidth in sub-channel, avoiding complex equalization in time-domain.…”

Section: Modelling Of Ofdm Systemmentioning

confidence: 99%

Suitability of OFDM in 5G Waveform – A Review

Lavanya

Satyanarayana

Ahmad

2019

Orient. J. Comp. Sci. and Technol

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Systematic pursuits are being developed to set forth the framework for the Fifth Generation (5G) wireless standards. This paper emphases on the most extensively deployed technology - Orthogonal Frequency Division Multiplexing (OFDM) that has outpaced other waveform aspirants for Fourth Generation (4G) communication standards. Irrespective of the beneficial features, it does possess a number of significant limitations that mark it as an incompatible candidate for the upcoming 5G standard. This paper highlights on its major drawback i.e high Peak-to-Average Power Ratio (PAPR). Results state that PAPR does cause sudden upsurge to the output signal envelope causing further other damages. There exists a need for more flexible waveforms to replace the conventional OFDM in order to address the unprecedented challenges. The future research directions in the domain are presented.

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“…This OFDM feature can be used to allocate bandwidth for several users with both higher energy and efficiency on the resources management. These features can be accomplished through the multi-band (MB) OFDM technique, in which several OFDM bands are simultaneously transmitted by a single wavelength [6].…”

Section: Introductionmentioning

confidence: 99%