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

Number of Access:17（2025-12-08 23:08 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/102909

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Title
Two-Stage Carrier Frequency Offset Estimation Using Eigenvalue and Scattering Coefficient b in Inverse Scattering Transform
Creator
CreatorName
Chino, Taisuke
CreatorName
Motomura, Takumi
CreatorName
Maeda, Takaya
NRID
1000040252613 1000040252613
ORCID
0000-0001-7503-5097 0000-0001-7503-5097
researchmap permalink
read0042809 read0042809
Scopus Author ID
7006461957 7006461957
CreatorName
Maruta, Akihiro
NRID
1000090466368 1000090466368
ORCID
0000-0001-9460-3870 0000-0001-9460-3870
researchmap permalink
KenMishina KenMishina
Scopus Author ID
15030319700 15030319700
CreatorName
Mishina, Ken
Subject
b-modulation
Carrier frequency offset
eigenvalue modulation
optical soliton
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.
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.
Publisher
Institute of Electrical and Electronics Engineers Inc.
Source Title
Journal of Lightwave Technology
Volume (Issue)
43(14)
Page
6484-6494
Date of Issued
2025-04-30
Language
English
Handle URL
https://hdl.handle.net/11094/102909
PISSN
07338724
eISSN
15582213
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1109/JLT.2025.3565884
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article