Adjustable Trellis-Path Limitation MLSE Based on Preceding Equalizer Output for O-Band Net 400-Gbps PAM-6 IM-DD 2-km Transmission

We propose an adjustable trellis-path limiting method in MLSE using the preceding filter's output, enabling IM-DD 2-km O-band PAM-6 transmission over 400 Gbps/lane while reducing the calculation complexity to 0.13% that of conventional MLSE.

Authors

Masanori Nakamura (ORCID: https://orcid.org/0000-0003-1145-8036)
Shuto Yamamoto (ORCID: https://orcid.org/0000-0003-2027-2751)
Etsushi Yamazaki (ORCID: https://orcid.org/0000-0001-5373-353X)
Hiroki Taniguchi (ORCID: https://orcid.org/0000-0001-9339-9708)
Y. Nakajima

Institutions

NTT (Japan) (JP)

Publication Details

Published: 2025-06-29
DOI: https://doi.org/10.23919/oecc/psc62146.2025.11109383
Primary Topic: Optical Network Technologies
Type: article
Field-Weighted Citation Impact: 0.00

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article

Adjustable Trellis-Path Limitation MLSE Based on Preceding Equalizer Output for O-Band Net 400-Gbps PAM-6 IM-DD 2-km Transmission

Masanori Nakamura, Shuto Yamamoto, Etsushi Yamazaki, Hiroki Taniguchi et al.

Jun 29, 2025

Optical Network Technologies

article

Adjustable Trellis-Path Limitation MLSE Based on Preceding Equalizer Output for O-Band Net 400-Gbps PAM-6 IM-DD 2-km Transmission

Masanori Nakamura, Shuto Yamamoto, Etsushi Yamazaki, Hiroki Taniguchi, Y. Nakajima

June 29, 2025article en

Abstract

We propose an adjustable trellis-path limiting method in MLSE using the preceding filter's output, enabling IM-DD 2-km O-band PAM-6 transmission over 400 Gbps/lane while reducing the calculation complexity to 0.13% that of conventional MLSE.

NTT (Japan) (JP)

Affordable and clean energy

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Optical Network Technologies

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