Sparse Volterra Nonlinear Equalizer by Employing Pruning Algorithm for High-Speed PAM-4 850-nm VCSEL Optical Interconnect

Chun-Yen Chuang; Wei-Fan Chang; Chia-Chien Wei; Ching-Ju Ho; Cheng-Yu Huang; Jin-Wei Shi; Lindor Henrickson; Young-Kai Chen; Jyehong Chen

doi:10.1364/OFC.2019.M1F.2

Optical Fiber Communication Conference (OFC) 2019
OSA Technical Digest (Optica Publishing Group, 2019),
paper M1F.2
•https://doi.org/10.1364/OFC.2019.M1F.2

Sparse Volterra Nonlinear Equalizer by Employing Pruning Algorithm for High-Speed PAM-4 850-nm VCSEL Optical Interconnect

Chun-Yen Chuang, Wei-Fan Chang, Chia-Chien Wei, Ching-Ju Ho, Cheng-Yu Huang, Jin-Wei Shi, Lindor Henrickson, Young-Kai Chen, and Jyehong Chen

Optical Fiber Communication Conference 2019

San Diego, California United States
3–7 March 2019
ISBN: 978-1-943580-53-8

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Enabling Technologies for Data Centers (M1F)

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C. Chuang, W. Chang, C. Wei, C. Ho, C. Huang, J. Shi, L. Henrickson, Y. Chen, and J. Chen, "Sparse Volterra Nonlinear Equalizer by Employing Pruning Algorithm for High-Speed PAM-4 850-nm VCSEL Optical Interconnect," in Optical Fiber Communication Conference (OFC) 2019, OSA Technical Digest (Optica Publishing Group, 2019), paper M1F.2.

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Abstract

A pruned Volterra equalizer that reduces computational complexity by up to 85.2% in 112-Gbps PAM-4 optical interconnects is proposed. The BER performance is competitive with LASSO-based Volterra equalizers, and training time is twice as fast.

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