Performance against implementation of digital backpropagation for high‐speed coherent optical systems

Parahyba, Victor; Reis, Jacklyn D.; Ranzini, Stenio M.; Schneider, Eduardo O.; Rosa, Eugênio Spanó; Simões, Fábio D.; Diniz, Júlio C. M.; Carvalho, Luis H. H.; Filho, E.P.L.; Oliveira, J. C. R. F.

doi:10.1049/el.2015.0576

Cited by 15 publications

(10 citation statements)

References 7 publications

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“…Fiber nonlinearities are a major limiting factor in today's fiber-optic communication links, and effective, implementable mitigation of nonlinear effects is therefore an important research topic. Digital back propagation (DBP) is one of the more popular digital signal processing (DSP) algorithms addressing the issue of fiber nonlinearities [1], and while there are a wealth of papers investigating different variations of DBP algorithms as well as their limitations in WDM systems (see [2] and its references), the only presented ASIC implementation uses high-level synthesis to estimate chip area [3], and does not analyze internal algorithm properties relevant to ASIC implementations.…”

Section: Introductionmentioning

confidence: 99%

Time-Domain Digital Back Propagation: Algorithm and Finite-Precision Implementation Aspects

Fougstedt

Mazur

Svensson

et al. 2017

Optical Fiber Communication Conference

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Section: Introductionmentioning

confidence: 99%

Time-Domain Digital Back Propagation: Algorithm and Finite-Precision Implementation Aspects

Fougstedt

Mazur

Svensson

et al. 2017

Optical Fiber Communication Conference

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“…Transmission impairments and nonlinear effects are assumed to be compensated at the receiver (out of the scope of this work). Prior works address nonlinear impairments compensation [24], carrier recovery [25] and chromatic dispersion estimation and compensation [26]. Related works with additional details of the AN test-bed include SDN applications for advanced WSS-based equalization [27], joint optimization of EDFA and WSS [28] and overshoot suppression when undesired transient responses occur in optical networks composed of WSS-based ROADMs [29].…”

Section: A Optical Network Test-bed Overviewmentioning

confidence: 99%

Traffic Allocation Strategies in WSS-Based Dynamic Optical Networks

Shakeri¹,

Garrich

Bravalheri³

et al. 2017

J. Opt. Commun. Netw.

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-Elastic optical networking (EON) is a viable solution to meet future dynamic capacity requirements of Internet Service Provider (ISP) and inter-datacenter networks. At the core of EON, Wavelength Selective Switches (WSSs) are applied to individually route optical circuits, while assigning an arbitrary bandwidth to each circuit. Critically, the WSS control scheme and configuration time may delay the creation time of each circuit in the network. In this paper, we first detail the WSS-based optical data-plane implementation of a metropolitan network test-bed. Then, we review an SDN application, designed to enable dynamic and fast circuit setup. Subsequently, we introduce a WSS logical model that captures the WSS time-sequence and is used to estimate the circuit setup response time. Then, we present two batch service policies that aim to reduce the circuit-setup response time by bundling multiple WSS reconfiguration steps into a single SDN command. Resulting performance gains are estimated through simulation.

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“…Main drawback of these techniques is the high complexity requirement in practical implementation due to large number of iterations. [13].Various investigations have been done to minimize the complexity requirement [14][15][16] .Algorithms based on DSP with DBP-SSFM and DBP-VSNE have been investigated to reduce the complexity for fiber nonlinear impairment compensation. In spite of these investigations there are number of models developed in wireless communication which can be investigated in the optical systems to further reduce the complexity.…”

Section: Imentioning

confidence: 99%

Implementation of Memory Polynomial Based Adaptive Digital Post distortion for Coherent Optical System

Mehra¹

2017

IJRASET

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The exponential growth in the ever -increasing demand of information require highly spectral efficient coherent optical systems with advanced modulation formats which allow the detection of in-phase and quadrature components of both polarizations and doubles the available capacity and spectral efficiency but the optical signal is severely degraded by linear and nonlinear transmission impairments after passing through the fiber. We have designed and implemented adaptive digital post distortion model to reduce fiber nonlinear impairments using memory polynomial for single channel DP-16QAM coherent system. Keywords: Digital Post distortion DPost-D, DP-16QAM, Memory polynomial, Coherent system, ACPR I.INTRODUCTION Due to the limitation of transmission bandwidth and the exponential growth in the demand of network traffic, mobile applications, internet video services , there is a strong requirement of the employment of highly spectral efficient coherent systems with advanced modulation formats such as Dual polarization quaternary phase shift keying (DP-QPSK) and Dual polarization 16 quadrature amplitude modulation ( DP-16QAM) which reduces the cost per bit and increase transmission capacity for high data rate signals. Higher optical signal to noise ratio (OSNR) is required with advanced modulation formats for long haul transmission system for achieving given bit error rate(BER)which requires more signal launch power in the fiber but increased launch power degrades signal quality due to kerr nonlinear effects that limits the achievable transmission distance in single channel and WDM systems [1][2][3][4][5][6][7][8].As compensation of linear effects is possible , research is boosted for compensation of nonlinear impairments which limit the transmission performance of the system. Number of techniques in optical domain and digital domain are proposed for compensation of fiber nonlinear impairments. Some of the compensation methods include electronic equalization , digital back propagation(DBP) , optical phase conjugation(OPC) ,frequency referenced transmission , phase conjugated twin waves ,spectral conversion [9-10]perturbation based nonlinear mitigation [11][12]. One of the prominent fiber transmission impairment compensation method for the coherent optical systems is the use of Digital Back-propagation (DBP) algorithm . Split step fourier transform and Volterra series nonlinear equalizer techniques based on digital back propagation have been used for fiber non linearity compensation. Main drawback of these techniques is the high complexity requirement in practical implementation due to large number of iterations. [13].Various investigations have been done to minimize the complexity requirement [14][15][16] .Algorithms based on DSP with DBP-SSFM and DBP-VSNE have been investigated to reduce the complexity for fiber nonlinear impairment compensation. In spite of these investigations there are number of models developed in wireless communication which can be investigated in the optical systems to further reduce ...

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Performance against implementation of digital backpropagation for high‐speed coherent optical systems

Cited by 15 publications

References 7 publications

Time-Domain Digital Back Propagation: Algorithm and Finite-Precision Implementation Aspects

Time-Domain Digital Back Propagation: Algorithm and Finite-Precision Implementation Aspects

Traffic Allocation Strategies in WSS-Based Dynamic Optical Networks

Implementation of Memory Polynomial Based Adaptive Digital Post distortion for Coherent Optical System

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