Non-Orthogonal Signal Transmission Over Nonlinear Optical Channels
The performance of spectrally efficient frequency division multiplexing (SEFDM) in optical communication systems is investigated considering the impact of fiber nonlinearities. Relative to orthogonal frequency division multiplexing (OFDM), sub-carriers within SEFDM signals are packed closer at a fre...
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8731634/ |
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| author | Tongyang Xu Tianhua Xu Polina Bayvel Izzat Darwazeh |
| author_facet | Tongyang Xu Tianhua Xu Polina Bayvel Izzat Darwazeh |
| author_sort | Tongyang Xu |
| collection | DOAJ |
| description | The performance of spectrally efficient frequency division multiplexing (SEFDM) in optical communication systems is investigated considering the impact of fiber nonlinearities. Relative to orthogonal frequency division multiplexing (OFDM), sub-carriers within SEFDM signals are packed closer at a frequency spacing less than the symbol rate. In order to recover the data, a specially designed sphere decoding detector is used at the receiver end to compensate for the self-created inter carrier interference encountered in SEFDM signals. Our research demonstrated the benefits of the use of sphere decoding in SEFDM and also demonstrates the performance improvement of long-haul optical communication systems using SEFDM compared to the use of conventional OFDM, when fiber nonlinearities are considered. Different modulation formats ranging from 4QAM to 32QAM are studied and it is shown that, for the same spectral efficiency and information rate, SEFDM signals allow a significant increase in the transmission distance compared to conventional OFDM signals. |
| format | Article |
| id | doaj-art-6d78f9c8152647d3a23864ff1fdfbc68 |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-6d78f9c8152647d3a23864ff1fdfbc682025-08-20T03:16:04ZengIEEEIEEE Photonics Journal1943-06552019-01-0111311310.1109/JPHOT.2019.29049608731634Non-Orthogonal Signal Transmission Over Nonlinear Optical ChannelsTongyang Xu0https://orcid.org/0000-0003-0782-8356Tianhua Xu1https://orcid.org/0000-0002-5510-841XPolina Bayvel2Izzat Darwazeh3https://orcid.org/0000-0003-3835-1319Communications and Information Systems Group, Department of Electronic and Electrical Engineering, University College London, London, U.K.School of Engineering, University of Warwick, Coventry, U.K.Optical Networks Group, Department of Electronic and Electrical Engineering, University College London, London, U.K.Communications and Information Systems Group, Department of Electronic and Electrical Engineering, University College London, London, U.K.The performance of spectrally efficient frequency division multiplexing (SEFDM) in optical communication systems is investigated considering the impact of fiber nonlinearities. Relative to orthogonal frequency division multiplexing (OFDM), sub-carriers within SEFDM signals are packed closer at a frequency spacing less than the symbol rate. In order to recover the data, a specially designed sphere decoding detector is used at the receiver end to compensate for the self-created inter carrier interference encountered in SEFDM signals. Our research demonstrated the benefits of the use of sphere decoding in SEFDM and also demonstrates the performance improvement of long-haul optical communication systems using SEFDM compared to the use of conventional OFDM, when fiber nonlinearities are considered. Different modulation formats ranging from 4QAM to 32QAM are studied and it is shown that, for the same spectral efficiency and information rate, SEFDM signals allow a significant increase in the transmission distance compared to conventional OFDM signals.https://ieeexplore.ieee.org/document/8731634/Spectrally efficient frequency division multiplexing (SEFDM)orthogonal frequency division multiplexing (OFDM)optical fiber communicationnonlinear fiber channel |
| spellingShingle | Tongyang Xu Tianhua Xu Polina Bayvel Izzat Darwazeh Non-Orthogonal Signal Transmission Over Nonlinear Optical Channels IEEE Photonics Journal Spectrally efficient frequency division multiplexing (SEFDM) orthogonal frequency division multiplexing (OFDM) optical fiber communication nonlinear fiber channel |
| title | Non-Orthogonal Signal Transmission Over Nonlinear Optical Channels |
| title_full | Non-Orthogonal Signal Transmission Over Nonlinear Optical Channels |
| title_fullStr | Non-Orthogonal Signal Transmission Over Nonlinear Optical Channels |
| title_full_unstemmed | Non-Orthogonal Signal Transmission Over Nonlinear Optical Channels |
| title_short | Non-Orthogonal Signal Transmission Over Nonlinear Optical Channels |
| title_sort | non orthogonal signal transmission over nonlinear optical channels |
| topic | Spectrally efficient frequency division multiplexing (SEFDM) orthogonal frequency division multiplexing (OFDM) optical fiber communication nonlinear fiber channel |
| url | https://ieeexplore.ieee.org/document/8731634/ |
| work_keys_str_mv | AT tongyangxu nonorthogonalsignaltransmissionovernonlinearopticalchannels AT tianhuaxu nonorthogonalsignaltransmissionovernonlinearopticalchannels AT polinabayvel nonorthogonalsignaltransmissionovernonlinearopticalchannels AT izzatdarwazeh nonorthogonalsignaltransmissionovernonlinearopticalchannels |