All-Digital 16 QAM Nyquist Pulse Transmission Over 4,000 Km

Masato Yoshida; Takeki Serikawa; Keisuke Kasai; Toshihiko Hirooka; Masataka Nakazawa

doi:10.23919/OECC/PSC62146.2025.11109099

All-Digital 16 QAM Nyquist Pulse Transmission Over 4,000 Km

Masato Yoshida
, Takeki Serikawa
, Keisuke Kasai
, Toshihiko Hirooka
, Masataka Nakazawa

Tohoku University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

We present the first demonstration of coherent Nyquist pulse TDM transmission in a fully digital scheme. 40-Gbaud, 16-QAM signals were transmitted over 4,000-km, which is 300-km longer than an NRZ transmission with a Nyquist filter.

Original language	English
Title of host publication	OECC/PSC 2025 - 30th OptoElectronics and Communications Conference/International Conference on Photonics in Switching and Computing 2025
Publisher	Institute of Electrical and Electronics Engineers Inc.
Edition	2025
ISBN (Electronic)	9784885523526
DOIs	https://doi.org/10.23919/OECC/PSC62146.2025.11109099
Publication status	Published - 2025
Event	30th OptoElectronics and Communications Conference and 2025 International Conference on Photonics in Switching and Computing, OECC/PSC 2025 - Sapporo, Japan Duration: 2025 Jun 29 → 2025 Jul 3

Conference

Conference	30th OptoElectronics and Communications Conference and 2025 International Conference on Photonics in Switching and Computing, OECC/PSC 2025
Country/Territory	Japan
City	Sapporo
Period	25/6/29 → 25/7/3

Keywords

Digital signal processing
advanced modulation
coding and multiplexing

Access to Document

10.23919/OECC/PSC62146.2025.11109099

Cite this

Yoshida, M., Serikawa, T., Kasai, K., Hirooka, T., & Nakazawa, M. (2025). All-Digital 16 QAM Nyquist Pulse Transmission Over 4,000 Km. In OECC/PSC 2025 - 30th OptoElectronics and Communications Conference/International Conference on Photonics in Switching and Computing 2025 (2025 ed.). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/OECC/PSC62146.2025.11109099

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title = "All-Digital 16 QAM Nyquist Pulse Transmission Over 4,000 Km",

abstract = "We present the first demonstration of coherent Nyquist pulse TDM transmission in a fully digital scheme. 40-Gbaud, 16-QAM signals were transmitted over 4,000-km, which is 300-km longer than an NRZ transmission with a Nyquist filter.",

keywords = "Digital signal processing, advanced modulation, coding and multiplexing",

author = "Masato Yoshida and Takeki Serikawa and Keisuke Kasai and Toshihiko Hirooka and Masataka Nakazawa",

note = "Publisher Copyright: {\textcopyright} 2025 The Institute of Electronics, Information and Communication Engineers (IEICE).; 30th OptoElectronics and Communications Conference and 2025 International Conference on Photonics in Switching and Computing, OECC/PSC 2025 ; Conference date: 29-06-2025 Through 03-07-2025",

year = "2025",

doi = "10.23919/OECC/PSC62146.2025.11109099",

language = "English",

booktitle = "OECC/PSC 2025 - 30th OptoElectronics and Communications Conference/International Conference on Photonics in Switching and Computing 2025",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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edition = "2025",

}

Yoshida, M, Serikawa, T, Kasai, K , Hirooka, T & Nakazawa, M 2025, All-Digital 16 QAM Nyquist Pulse Transmission Over 4,000 Km. in OECC/PSC 2025 - 30th OptoElectronics and Communications Conference/International Conference on Photonics in Switching and Computing 2025. 2025 edn, Institute of Electrical and Electronics Engineers Inc., 30th OptoElectronics and Communications Conference and 2025 International Conference on Photonics in Switching and Computing, OECC/PSC 2025, Sapporo, Japan, 25/6/29. https://doi.org/10.23919/OECC/PSC62146.2025.11109099

All-Digital 16 QAM Nyquist Pulse Transmission Over 4,000 Km. / Yoshida, Masato; Serikawa, Takeki; Kasai, Keisuke et al.
OECC/PSC 2025 - 30th OptoElectronics and Communications Conference/International Conference on Photonics in Switching and Computing 2025. 2025. ed. Institute of Electrical and Electronics Engineers Inc., 2025.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - All-Digital 16 QAM Nyquist Pulse Transmission Over 4,000 Km

AU - Yoshida, Masato

AU - Serikawa, Takeki

AU - Kasai, Keisuke

AU - Hirooka, Toshihiko

AU - Nakazawa, Masataka

PY - 2025

Y1 - 2025

N2 - We present the first demonstration of coherent Nyquist pulse TDM transmission in a fully digital scheme. 40-Gbaud, 16-QAM signals were transmitted over 4,000-km, which is 300-km longer than an NRZ transmission with a Nyquist filter.

AB - We present the first demonstration of coherent Nyquist pulse TDM transmission in a fully digital scheme. 40-Gbaud, 16-QAM signals were transmitted over 4,000-km, which is 300-km longer than an NRZ transmission with a Nyquist filter.

KW - Digital signal processing

KW - advanced modulation

KW - coding and multiplexing

UR - https://www.scopus.com/pages/publications/105015836757

UR - https://www.scopus.com/pages/publications/105015836757#tab=citedBy

U2 - 10.23919/OECC/PSC62146.2025.11109099

DO - 10.23919/OECC/PSC62146.2025.11109099

M3 - Conference contribution

AN - SCOPUS:105015836757

BT - OECC/PSC 2025 - 30th OptoElectronics and Communications Conference/International Conference on Photonics in Switching and Computing 2025

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 30th OptoElectronics and Communications Conference and 2025 International Conference on Photonics in Switching and Computing, OECC/PSC 2025

Y2 - 29 June 2025 through 3 July 2025

ER -

All-Digital 16 QAM Nyquist Pulse Transmission Over 4,000 Km

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Keywords

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