Increasing the spectral efficiency of DDO-CE-OFDM systems by multi-objective optimization

Helder Roberto O. de Rocha; Vinicius O.C. Dias; Esequiel da Veiga Pereira; Reginaldo Barbosa Nunes; Marcelo E.V. Segatto; Jair A.L. Silva

doi:10.1109/JLT.2019.2898945

Increasing the spectral efficiency of DDO-CE-OFDM systems by multi-objective optimization

Helder Roberto O. de Rocha
, Vinicius O.C. Dias
, Esequiel da Veiga Pereira
, Reginaldo Barbosa Nunes
, Marcelo E.V. Segatto
, Jair A.L. Silva (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

11 Citaten (Scopus)

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A multi-objective optimization was implemented to increase the spectral efficiency of direct-detection optical orthogonal frequency division multiplexing (OFDM) systems with constant-envelope (CE) signals. Based on a genetic algorithm, the optimization procedure evaluates the impact of fiber injection power in the reduction of the guard band between the optical carrier and the CE-OFDM signals, optimizing important parameters such as electrical phase modulation and optical modulation indices of the denominated DDO-CE-OFDM system. Simulation results show that a guard-band reduction around 40% was achieved in a 4 Gbps optimized DDO-CE-OFDM system with 16-QAM subcarrier mapping and -7 dBm fiber input power. Results obtained in an experimental proof-of-concept conducted to validate the optimization procedure show that this reduction can reach 66\% according to a power penalty of 2 dB demanded by the inherent spectral broadening of CE-OFDM signals, after propagation over 40 km of standard single-mode fiber.

Originele taal-2	Engels
Artikelnummer	8640082
Pagina's (van-tot)	2155-2162
Aantal pagina's	8
Tijdschrift	Journal of Lightwave Technology
Volume	37
Nummer van het tijdschrift	9
DOI's	https://doi.org/10.1109/JLT.2019.2898945
Status	Gepubliceerd - 1 mei 2019

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Manuscript received September 20, 2018; revised December 10, 2018 and January 16, 2019; accepted February 8, 2019. Date of publication February 12, 2019; date of current version April 11, 2019. This work was supported in part by PRONEX/FAPES-280/2018, in part by FAPES-538/2018, in part by FAPES-601/2018, in part by CNPq-307757/2016-1, in part by CNPq-304564/2016-8, in part by CNPq-309823/2018-8, and in part by NiDA projects. (Corresponding author: Jair A. L. Silva.) H. R. de O. Rocha, M. E. V. Segatto, and J. A. L. Silva are with the Department of Electrical Engineering, Federal University of Espírito Santo, 29075-910 Vitória-ES, Brazil (e-mail:, [email protected]; [email protected]; [email protected]).

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10.1109/JLT.2019.2898945

publishers versionDefinitieve gepubliceerde versie, 2,01 MBLicentie: TAVERNE

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title = "Increasing the spectral efficiency of DDO-CE-OFDM systems by multi-objective optimization",

abstract = "A multi-objective optimization was implemented to increase the spectral efficiency of direct-detection optical orthogonal frequency division multiplexing (OFDM) systems with constant-envelope (CE) signals. Based on a genetic algorithm, the optimization procedure evaluates the impact of fiber injection power in the reduction of the guard band between the optical carrier and the CE-OFDM signals, optimizing important parameters such as electrical phase modulation and optical modulation indices of the denominated DDO-CE-OFDM system. Simulation results show that a guard-band reduction around 40\% was achieved in a 4 Gbps optimized DDO-CE-OFDM system with 16-QAM subcarrier mapping and -7 dBm fiber input power. Results obtained in an experimental proof-of-concept conducted to validate the optimization procedure show that this reduction can reach 66\textbackslash{}\% according to a power penalty of 2 dB demanded by the inherent spectral broadening of CE-OFDM signals, after propagation over 40 km of standard single-mode fiber.",

keywords = "Constant-envelope optical OFDM, multi-objective optimization, NSGA II, spectral efficiency",

author = "\{de Rocha\}, \{Helder Roberto O.\} and Dias, \{Vinicius O.C.\} and \{da Veiga Pereira\}, Esequiel and Nunes, \{Reginaldo Barbosa\} and Segatto, \{Marcelo E.V.\} and Silva, \{Jair A.L.\}",

year = "2019",

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AU - de Rocha, Helder Roberto O.

AU - Dias, Vinicius O.C.

AU - da Veiga Pereira, Esequiel

AU - Nunes, Reginaldo Barbosa

AU - Segatto, Marcelo E.V.

AU - Silva, Jair A.L.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - A multi-objective optimization was implemented to increase the spectral efficiency of direct-detection optical orthogonal frequency division multiplexing (OFDM) systems with constant-envelope (CE) signals. Based on a genetic algorithm, the optimization procedure evaluates the impact of fiber injection power in the reduction of the guard band between the optical carrier and the CE-OFDM signals, optimizing important parameters such as electrical phase modulation and optical modulation indices of the denominated DDO-CE-OFDM system. Simulation results show that a guard-band reduction around 40% was achieved in a 4 Gbps optimized DDO-CE-OFDM system with 16-QAM subcarrier mapping and -7 dBm fiber input power. Results obtained in an experimental proof-of-concept conducted to validate the optimization procedure show that this reduction can reach 66\% according to a power penalty of 2 dB demanded by the inherent spectral broadening of CE-OFDM signals, after propagation over 40 km of standard single-mode fiber.

AB - A multi-objective optimization was implemented to increase the spectral efficiency of direct-detection optical orthogonal frequency division multiplexing (OFDM) systems with constant-envelope (CE) signals. Based on a genetic algorithm, the optimization procedure evaluates the impact of fiber injection power in the reduction of the guard band between the optical carrier and the CE-OFDM signals, optimizing important parameters such as electrical phase modulation and optical modulation indices of the denominated DDO-CE-OFDM system. Simulation results show that a guard-band reduction around 40% was achieved in a 4 Gbps optimized DDO-CE-OFDM system with 16-QAM subcarrier mapping and -7 dBm fiber input power. Results obtained in an experimental proof-of-concept conducted to validate the optimization procedure show that this reduction can reach 66\% according to a power penalty of 2 dB demanded by the inherent spectral broadening of CE-OFDM signals, after propagation over 40 km of standard single-mode fiber.

KW - Constant-envelope optical OFDM

KW - multi-objective optimization

KW - NSGA II

KW - spectral efficiency

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Increasing the spectral efficiency of DDO-CE-OFDM systems by multi-objective optimization

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