Kurtosis-limited Sphere Shaping for Nonlinear Interference Noise Reduction in Optical Channels

Yunus Can Gültekin; Alex  Alvarado; Olga Vassilieva; Inwoong Kim; Paparao Palacharla; Chigo M. Okonkwo; Frans M.J. Willems

doi:10.1109/JLT.2021.3120915

Kurtosis-limited Sphere Shaping for Nonlinear Interference Noise Reduction in Optical Channels

Yunus Can Gültekin (Corresponding author)
, Alex Alvarado
, Olga Vassilieva
, Inwoong Kim
, Paparao Palacharla
, Chigo M. Okonkwo
, Frans M.J. Willems

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33 Citaten (Scopus)

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Samenvatting

Nonlinear interference (NLI) generated during the propagation of an optical waveform through the fiber depends on the fourth order standardized moment of the channel input distribution, also known as kurtosis. Probabilistically-shaped inputs optimized for the linear Gaussian channel have a Gaussian-like distribution with high kurtosis. For optical channels, this leads to an increase in NLI power and consequently, a decrease in effective signal-to-noise ratio (SNR). In this work, we propose kurtosis-limited enumerative sphere shaping (K-ESS) as an algorithm to generate low-kurtosis shaped inputs. Numerical simulations at a shaping blocklength of 108 amplitudes demonstrate that with K-ESS, it is possible to increase the effective SNRs by 0.4 dB in a single-span single-channel scenario at 400 Gbit/s. K-ESS offers also a twofold decrease in frame error rate with respect to Gaussian-channel-optimal sphere shaping.

Originele taal-2	Engels
Artikelnummer	9580735
Pagina's (van-tot)	101-112
Aantal pagina's	12
Tijdschrift	Journal of Lightwave Technology
Volume	40
Nummer van het tijdschrift	1
Vroegere onlinedatum	19 okt. 2021
DOI's	https://doi.org/10.1109/JLT.2021.3120915
Status	Gepubliceerd - 1 jan. 2022

Financiering

The work of Yunus Can Gültekin and Alex Alvarado was supported in part by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme under Grant 757791. This article was presented in part at the European Conference on Optical Communication (ECOC), Bordeaux, France, September 2021.

Toegang tot document

10.1109/JLT.2021.3120915

published versionDefinitieve gepubliceerde versie, 0,99 MBLicentie: TAVERNE

https://arxiv.org/abs/2105.14794

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Link naar publicatie in Scopus

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1 Actief

DIGI-OPT: Digital and optical technologies for fiber optical transmission
Alvarado, A. (Project Manager), Gültekin, Y. C. (Projectmedewerker), Wu, K. (Projectmedewerker), Goossens, S. (Projectmedewerker), Ramachandran, V. (Projectmedewerker), Tasiou, L. (Projectmedewerker), Willems, F. M. J. (Projectmedewerker), Lampel, F. (Projectmedewerker), Barreiro, A. (Projectmedewerker) & Clump-Busser, E. (Projectmedewerker)
7/03/18 → 31/12/26
Project: Third tier
FUN-NOTCH: Fundamentals of the Nonlinear Optical Channel
Alvarado, A. (Project Manager), Liga, G. (Projectmedewerker), Barreiro, A. (Projectmedewerker), Willems, F. M. J. (Project communicatie medewerker), Sanders, R. (Project communicatie medewerker), Alvarado, A. (Project communicatie medewerker), Barreiro, A. (Project communicatie medewerker), Sheikh, A. (Projectmedewerker), Goossens, S. (Projectmedewerker), de Jonge, M. (Project communicatie medewerker), Gültekin, Y. C. (Projectmedewerker), Jaffal, Y. (Projectmedewerker), Oliari, V. (Projectmedewerker), Ramachandran, V. (Projectmedewerker), Alvarado, A. (Project Manager), Gültekin, Y. C. (Projectmedewerker), Oliari, V. (Projectmedewerker), Liga, G. (Projectmedewerker), Sheikh, A. (Projectmedewerker), Barreiro, A. (Projectmedewerker), Goossens, S. (Projectmedewerker) & Ramachandran, V. (Projectmedewerker)
1/01/18 → 30/06/25
Project: Third tier

33 Citaties
1 Conferentiebijdrage
1 Tijdschriftartikel

On Kurtosis-limited Enumerative Sphere Shaping for Reach Increase in Single-span Systems
Gültekin, Y. C., Alvarado, A., Vassilieva, O., Kim, I., Palacharla, P., Okonkwo, C. M. & Willems, F. M. J., 22 nov. 2021, 2021 European Conference on Optical Communication, ECOC 2021. Institute of Electrical and Electronics Engineers, 4 blz. 9605938
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4 !!Link opens in a new tab Citaten (Scopus)

1 Downloads (Pure)
Introducing enumerative sphere shaping for optical communication systems with short blocklengths
Amari, A. (Corresponding author), Goossens, S., Gültekin, Y. C., Vassilieva, O., Kim, I., Ikeuchi, T., Okonkwo, C. M., Willems, F. M. J. & Alvarado, A., 1 dec. 2019, In: Journal of Lightwave Technology. 37, 23, blz. 5926-5936 11 blz., 8850066.
Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

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Citeer dit

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title = "Kurtosis-limited Sphere Shaping for Nonlinear Interference Noise Reduction in Optical Channels",

abstract = "Nonlinear interference (NLI) generated during the propagation of an optical waveform through the fiber depends on the fourth order standardized moment of the channel input distribution, also known as kurtosis. Probabilistically-shaped inputs optimized for the linear Gaussian channel have a Gaussian-like distribution with high kurtosis. For optical channels, this leads to an increase in NLI power and consequently, a decrease in effective signal-to-noise ratio (SNR). In this work, we propose kurtosis-limited enumerative sphere shaping (K-ESS) as an algorithm to generate low-kurtosis shaped inputs. Numerical simulations at a shaping blocklength of 108 amplitudes demonstrate that with K-ESS, it is possible to increase the effective SNRs by 0.4 dB in a single-span single-channel scenario at 400 Gbit/s. K-ESS offers also a twofold decrease in frame error rate with respect to Gaussian-channel-optimal sphere shaping.",

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AU - Kim, Inwoong

AU - Palacharla, Paparao

AU - Okonkwo, Chigo M.

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AB - Nonlinear interference (NLI) generated during the propagation of an optical waveform through the fiber depends on the fourth order standardized moment of the channel input distribution, also known as kurtosis. Probabilistically-shaped inputs optimized for the linear Gaussian channel have a Gaussian-like distribution with high kurtosis. For optical channels, this leads to an increase in NLI power and consequently, a decrease in effective signal-to-noise ratio (SNR). In this work, we propose kurtosis-limited enumerative sphere shaping (K-ESS) as an algorithm to generate low-kurtosis shaped inputs. Numerical simulations at a shaping blocklength of 108 amplitudes demonstrate that with K-ESS, it is possible to increase the effective SNRs by 0.4 dB in a single-span single-channel scenario at 400 Gbit/s. K-ESS offers also a twofold decrease in frame error rate with respect to Gaussian-channel-optimal sphere shaping.

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KW - Wavelength division multiplexing

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KW - kurtosis

KW - nonlinear interference

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Kurtosis-limited Sphere Shaping for Nonlinear Interference Noise Reduction in Optical Channels

Samenvatting

Financiering

Toegang tot document

Andere bestanden en links

Vingerafdruk

Projecten

DIGI-OPT: Digital and optical technologies for fiber optical transmission

FUN-NOTCH: Fundamentals of the Nonlinear Optical Channel

Onderzoekersoutput

On Kurtosis-limited Enumerative Sphere Shaping for Reach Increase in Single-span Systems

Introducing enumerative sphere shaping for optical communication systems with short blocklengths

Citeer dit