Equalization-enhanced phase noise suppression advantage of CO-FBMC over RGI CO-OFDM

T.T. Nguyen, R. Nissel, S.T. Le, M. Wuilpart, Patrice Megret

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Summary form only given. Reduced-guard-interval (RGI) coherent optical orthogonal frequency division multiplexing (CO-OFDM) has been considered as a promising technique for high-speed optical fiber communication systems due to its simple equalization scheme and tolerance to residual chromatic dispersion (CD) [1]. However, one serious drawback of RGI OFDM is the high side lobes due to the `brick-wall' filtering, which leads to higher vulnerability to intercarrier interference (ICI) due to frequency offset, laser and nonlinear phase noise. As a result, RGI CO-OFDM transmission suffers seriously from equalization-enhanced phase noise (EEPN) which is a complicated interplay of laser phase noise, nonlinear phase noise and digital CD equalizer [2]. Here, we show, for the first time, that the impact of EEPN can be significantly mitigated by employing a specific version of OFDM called filter bank multicarrier (FBMC) in which the retangular pulse shape is replaced by a modified raised cosine function. Unlike OFDM signal, FBMC guarantees the orthogonality only in real fields where the receiverd signal is interfered by the so-called imaginary interference [3-4]. Therefore, the channel estimation and phase noise compensation in CO-FBMC are different from those of RGI CO-OFDM. In this work, we considered two equalization techniques (including both channel and phase noise estimations) for CO-FBMC, namely the auxiliary pilot (AP) and the coding pilot (CP). For RGI CO-OFDM transmission, the conventional pilot-aided equalization was applied.
Original languageEnglish
Title of host publication2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
PublisherIEEE
ISBN (Electronic)978-1-5090-6736-7
ISBN (Print)978-1-5090-6737-4
DOIs
Publication statusPublished - 30 Oct 2017

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frequency division multiplexing
retarding
intervals
filters
channel noise
interference
vulnerability
bricks
orthogonality
lobes
lasers
telecommunication
coding
optical fibers
high speed
pulses

Cite this

Nguyen, T. T., Nissel, R., Le, S. T., Wuilpart, M., & Megret, P. (2017). Equalization-enhanced phase noise suppression advantage of CO-FBMC over RGI CO-OFDM. In 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) IEEE. https://doi.org/10.1109/CLEOE-EQEC.2017.8086935
Nguyen, T.T. ; Nissel, R. ; Le, S.T. ; Wuilpart, M. ; Megret, Patrice. / Equalization-enhanced phase noise suppression advantage of CO-FBMC over RGI CO-OFDM. 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2017.
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abstract = "Summary form only given. Reduced-guard-interval (RGI) coherent optical orthogonal frequency division multiplexing (CO-OFDM) has been considered as a promising technique for high-speed optical fiber communication systems due to its simple equalization scheme and tolerance to residual chromatic dispersion (CD) [1]. However, one serious drawback of RGI OFDM is the high side lobes due to the `brick-wall' filtering, which leads to higher vulnerability to intercarrier interference (ICI) due to frequency offset, laser and nonlinear phase noise. As a result, RGI CO-OFDM transmission suffers seriously from equalization-enhanced phase noise (EEPN) which is a complicated interplay of laser phase noise, nonlinear phase noise and digital CD equalizer [2]. Here, we show, for the first time, that the impact of EEPN can be significantly mitigated by employing a specific version of OFDM called filter bank multicarrier (FBMC) in which the retangular pulse shape is replaced by a modified raised cosine function. Unlike OFDM signal, FBMC guarantees the orthogonality only in real fields where the receiverd signal is interfered by the so-called imaginary interference [3-4]. Therefore, the channel estimation and phase noise compensation in CO-FBMC are different from those of RGI CO-OFDM. In this work, we considered two equalization techniques (including both channel and phase noise estimations) for CO-FBMC, namely the auxiliary pilot (AP) and the coding pilot (CP). For RGI CO-OFDM transmission, the conventional pilot-aided equalization was applied.",
author = "T.T. Nguyen and R. Nissel and S.T. Le and M. Wuilpart and Patrice Megret",
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Nguyen, TT, Nissel, R, Le, ST, Wuilpart, M & Megret, P 2017, Equalization-enhanced phase noise suppression advantage of CO-FBMC over RGI CO-OFDM. in 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE. https://doi.org/10.1109/CLEOE-EQEC.2017.8086935

Equalization-enhanced phase noise suppression advantage of CO-FBMC over RGI CO-OFDM. / Nguyen, T.T.; Nissel, R.; Le, S.T.; Wuilpart, M.; Megret, Patrice.

2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2017.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AU - Nissel, R.

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AU - Megret, Patrice

PY - 2017/10/30

Y1 - 2017/10/30

N2 - Summary form only given. Reduced-guard-interval (RGI) coherent optical orthogonal frequency division multiplexing (CO-OFDM) has been considered as a promising technique for high-speed optical fiber communication systems due to its simple equalization scheme and tolerance to residual chromatic dispersion (CD) [1]. However, one serious drawback of RGI OFDM is the high side lobes due to the `brick-wall' filtering, which leads to higher vulnerability to intercarrier interference (ICI) due to frequency offset, laser and nonlinear phase noise. As a result, RGI CO-OFDM transmission suffers seriously from equalization-enhanced phase noise (EEPN) which is a complicated interplay of laser phase noise, nonlinear phase noise and digital CD equalizer [2]. Here, we show, for the first time, that the impact of EEPN can be significantly mitigated by employing a specific version of OFDM called filter bank multicarrier (FBMC) in which the retangular pulse shape is replaced by a modified raised cosine function. Unlike OFDM signal, FBMC guarantees the orthogonality only in real fields where the receiverd signal is interfered by the so-called imaginary interference [3-4]. Therefore, the channel estimation and phase noise compensation in CO-FBMC are different from those of RGI CO-OFDM. In this work, we considered two equalization techniques (including both channel and phase noise estimations) for CO-FBMC, namely the auxiliary pilot (AP) and the coding pilot (CP). For RGI CO-OFDM transmission, the conventional pilot-aided equalization was applied.

AB - Summary form only given. Reduced-guard-interval (RGI) coherent optical orthogonal frequency division multiplexing (CO-OFDM) has been considered as a promising technique for high-speed optical fiber communication systems due to its simple equalization scheme and tolerance to residual chromatic dispersion (CD) [1]. However, one serious drawback of RGI OFDM is the high side lobes due to the `brick-wall' filtering, which leads to higher vulnerability to intercarrier interference (ICI) due to frequency offset, laser and nonlinear phase noise. As a result, RGI CO-OFDM transmission suffers seriously from equalization-enhanced phase noise (EEPN) which is a complicated interplay of laser phase noise, nonlinear phase noise and digital CD equalizer [2]. Here, we show, for the first time, that the impact of EEPN can be significantly mitigated by employing a specific version of OFDM called filter bank multicarrier (FBMC) in which the retangular pulse shape is replaced by a modified raised cosine function. Unlike OFDM signal, FBMC guarantees the orthogonality only in real fields where the receiverd signal is interfered by the so-called imaginary interference [3-4]. Therefore, the channel estimation and phase noise compensation in CO-FBMC are different from those of RGI CO-OFDM. In this work, we considered two equalization techniques (including both channel and phase noise estimations) for CO-FBMC, namely the auxiliary pilot (AP) and the coding pilot (CP). For RGI CO-OFDM transmission, the conventional pilot-aided equalization was applied.

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PB - IEEE

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Nguyen TT, Nissel R, Le ST, Wuilpart M, Megret P. Equalization-enhanced phase noise suppression advantage of CO-FBMC over RGI CO-OFDM. In 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE. 2017 https://doi.org/10.1109/CLEOE-EQEC.2017.8086935