Robust channel estimation for coherent optical orthogonal chirp-division multiplexing with pulse compression and noise rejection

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dc.contributor.author Ouyang, Xing
dc.contributor.author Antony, Cleitus
dc.contributor.author Talli, Giuseppe
dc.contributor.author Townsend, Paul D.
dc.date.accessioned 2018-12-20T15:31:45Z
dc.date.available 2018-12-20T15:31:45Z
dc.date.issued 2018-10-22
dc.identifier.citation Ouyang, X., Antony, C., Talli, G. and Townsend, P. D. (2018) 'Robust Channel Estimation for Coherent Optical Orthogonal Chirp-Division Multiplexing With Pulse Compression and Noise Rejection', Journal of Lightwave Technology, 36(23), pp. 5600-5610. doi: 10.1109/JLT.2018.2877305 en
dc.identifier.volume 36 en
dc.identifier.issued 23 en
dc.identifier.startpage 5600 en
dc.identifier.endpage 5610 en
dc.identifier.issn 0733-8724
dc.identifier.uri http://hdl.handle.net/10468/7249
dc.identifier.doi 10.1109/JLT.2018.2877305
dc.description.abstract Orthogonal chirp-division multiplexing (OCDM) was recently proposed as a promising modulation technique for high-speed fiber-optic communications due to its resilience to transmission impairments. By exploiting the pulse-compression property of the chirped waveforms, in this paper we propose a channel estimation algorithm compatible with the coherent optical (CO) OCDM system. In the proposed algorithm, a chirp from the orthogonal basis of the Fresnel transform is employed as the pilot signal. At the receiver, noise-rejection windowing is adopted in the Fresnel domain to remove the excessive noise after pulse compression, and then dispersions can be effectively compensated by efficient single-tap equalizers. It is shown that the proposed estimator is unbiased as long as the width of the noise-rejection window is wider than the maximum excess delay of the system. Moreover, the optimal window function achieving the minimum mean square error is derived in closed form. With these desired properties, it is shown that the proposed estimator outperforms conventional estimators, such as the intrasymbol frequency-domain average estimator, especially when the dispersion is severe. Finally, numerical results are provided to confirm the advantages of the CO-OCDM system with the proposed channel estimation algorithm. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Institute of Electrical and Electronics Engineers (IEEE) en
dc.relation.uri https://ieeexplore.ieee.org/abstract/document/8501550
dc.rights © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. en
dc.subject Channel estimation en
dc.subject Chirp modulation en
dc.subject Equalisers en
dc.subject Frequency-domain analysis en
dc.subject Least mean squares methods en
dc.subject Optical fibre communication en
dc.subject Optical fibre dispersion en
dc.subject Optical modulation en
dc.subject Maximum excess delay en
dc.subject Optimal window function en
dc.subject Intrasymbol frequency-domain average estimator en
dc.subject CO-OCDM system en
dc.subject Channel estimation algorithm en
dc.subject Robust channel estimation en
dc.subject Coherent optical orthogonal chirp-division multiplexing en
dc.subject Pulse compression en
dc.subject Noise rejection en
dc.subject High-speed fiber-optic communications en
dc.subject Transmission impairments en
dc.subject Pulse-compression property en
dc.subject Chirped waveforms en
dc.subject Coherent optical OCDM system en
dc.subject Orthogonal basis en
dc.subject Fresnel transform en
dc.subject Noise-rejection windowing en
dc.subject Fresnel domain en
dc.subject Noise-rejection window en
dc.subject Modulation technique en
dc.subject Chirp en
dc.subject Discrete Fourier transforms en
dc.subject Code division multiplexing en
dc.subject Receivers en
dc.subject Intra-symbol frequency-domain average (ISFA) en
dc.subject Optical coherent detection en
dc.subject Orthogonal chirp-division multiplexing (OCDM) en
dc.subject Orthogonal frequency-division multiplexing (OFDM) en
dc.title Robust channel estimation for coherent optical orthogonal chirp-division multiplexing with pulse compression and noise rejection en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Paul Townsend, Tyndall Photonics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: paul.townsend@tyndall.ie en
dc.internal.availability Full text available en
dc.date.updated 2018-12-20T15:28:25Z
dc.description.version Accepted Version en
dc.internal.rssid 466282693
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Lightwave Technology en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress paul.townsend@tyndall.ie en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Investigator Programme/12/IA/1270/IE/Next Generation Photonic Access and Data Communication Systems/ en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2276/IE/I-PIC Irish Photonic Integration Research Centre/ en


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