Two-Stage Carrier Frequency Offset Estimation Using Eigenvalue and Scattering Coefficient b in Inverse Scattering Transform

Chino, Taisuke; Motomura, Takumi; Maeda, Takaya; Maruta, Akihiro; Mishina, Ken

doi:https://doi.org/10.1109/JLT.2025.3565884

Two-Stage Carrier Frequency Offset Estimation Using Eigenvalue and Scattering Coefficient b in Inverse Scattering Transform

Chino, Taisuke; Motomura, Takumi; Maeda, Takaya et al.

Journal of Lightwave Technology, 2025, 43(14), 6484-6494

アクセス数:17件（2025-12-09 00:11 集計）

固定URL: https://hdl.handle.net/11094/102909

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タイトル	Two-Stage Carrier Frequency Offset Estimation Using Eigenvalue and Scattering Coefficient b in Inverse Scattering Transform
著者	著者名 Chino, Taisuke
	著者名 Motomura, Takumi
	著者名 Maeda, Takaya
	NRID 1000040252613 1000040252613 ORCID 0000-0001-7503-5097 0000-0001-7503-5097 researchmap permalink read0042809 read0042809 Scopus Author ID 7006461957 7006461957 著者名 Maruta, Akihiro
	NRID 1000090466368 1000090466368 ORCID 0000-0001-9460-3870 0000-0001-9460-3870 researchmap permalink KenMishina KenMishina Scopus Author ID 15030319700 15030319700 著者名 Mishina, Ken
キーワード等	b-modulation
	Carrier frequency offset
	eigenvalue modulation
	optical soliton
内容	Chino T., Motomura T., Maeda T., et al. Two-Stage Carrier Frequency Offset Estimation Using Eigenvalue and Scattering Coefficient b in Inverse Scattering Transform. Journal of Lightwave Technology 43, 6484 (2025); https://doi.org/10.1109/JLT.2025.3565884.
抄録	Inverse scattering transform (IST)-based transmission is one of the known approaches to overcome the Kerr nonlinearity limit in optical fiber communication systems. IST is known as Nonlinear Fourier transform (NFT) in optical fiber communications. However, the effect of carrier frequency offset (CFO) in digitally coherent receivers induces scattering data shifts in IST. Therefore, fine CFO estimation and compensation are required particularly for multilevel modulation based on IST. This paper proposes a two-stage CFO estimation method using eigenvalue and scattering coefficient b in IST. Numerical simulations and experiments investigate the estimation accuracy of the proposed method. The proposed method provides a high-accuracy estimation and covers a wide range of the CFO. An estimation accuracy of less than 10 kHz error is achieved under pulse period (25.6 ns) and sampling rate (10 GSa/s). Furthermore, we demonstrate that the proposed method is valid even for two-soliton solutions with a multipeak spectrum.
出版者	Institute of Electrical and Electronics Engineers Inc.
収録物名	Journal of Lightwave Technology
巻(号)	43(14)
ページ	6484-6494
刊行年月	2025-04-30
言語	英語
ハンドルURL	https://hdl.handle.net/11094/102909
PISSN	07338724
eISSN	15582213
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1109/JLT.2025.3565884
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Journal of Lightwave Technology. 2025, 43(14), p. 6484-6494
DC.title	Two-Stage Carrier Frequency Offset Estimation Using Eigenvalue and Scattering Coefficient b in Inverse Scattering Transform
DC.creator	Chino, Taisuke
	Motomura, Takumi
	Maeda, Takaya
	Maruta, Akihiro
	Mishina, Ken
DC.publisher	Institute of Electrical and Electronics Engineers Inc.
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-04-30
DC.identifier	https://doi.org/10.1109/JLT.2025.3565884
DC.subject	b-modulation
	Carrier frequency offset
	eigenvalue modulation
	optical soliton
DC.description	Chino T., Motomura T., Maeda T., et al. Two-Stage Carrier Frequency Offset Estimation Using Eigenvalue and Scattering Coefficient b in Inverse Scattering Transform. Journal of Lightwave Technology 43, 6484 (2025); https://doi.org/10.1109/JLT.2025.3565884.
DCTERMS.abstract	Inverse scattering transform (IST)-based transmission is one of the known approaches to overcome the Kerr nonlinearity limit in optical fiber communication systems. IST is known as Nonlinear Fourier transform (NFT) in optical fiber communications. However, the effect of carrier frequency offset (CFO) in digitally coherent receivers induces scattering data shifts in IST. Therefore, fine CFO estimation and compensation are required particularly for multilevel modulation based on IST. This paper proposes a two-stage CFO estimation method using eigenvalue and scattering coefficient b in IST. Numerical simulations and experiments investigate the estimation accuracy of the proposed method. The proposed method provides a high-accuracy estimation and covers a wide range of the CFO. An estimation accuracy of less than 10 kHz error is achieved under pulse period (25.6 ns) and sampling rate (10 GSa/s). Furthermore, we demonstrate that the proposed method is valid even for two-soliton solutions with a multipeak spectrum.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	102909
citation_title	Two-Stage Carrier Frequency Offset Estimation Using Eigenvalue and Scattering Coefficient b in Inverse Scattering Transform
citation_author	Chino, Taisuke
	Motomura, Takumi
	Maeda, Takaya
	Maruta, Akihiro
	Mishina, Ken
citation_publisher	Institute of Electrical and Electronics Engineers Inc.
citation_language	英語
citation_date	2025-04-30
citation_journal_title	Journal of Lightwave Technology
citation_volume	43
citation_issue	14
citation_firstpage	6484
citation_lastpage	6494
citation_doi	https://doi.org/10.1109/JLT.2025.3565884
citation_public_url	https://hdl.handle.net/11094/102909

Two-Stage Carrier Frequency Offset Estimation Using Eigenvalue and Scattering Coefficient b in Inverse Scattering Transform

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