Optimization of training sequence for DFT-spread DMT signal in optical access network with direct detection utilizing DML

Fan Li; Xinying Li; Jianjun Yu; Lin Chen

doi:10.1364/OE.22.022962

Optimization of training sequence for DFT-spread DMT signal in optical access network with direct detection utilizing DML

Fan Li^*, Xinying Li, Jianjun Yu, Lin Chen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

We experimentally demonstrated the transmission of 79.86-Gb/s discrete-Fourier-transform spread 32QAM discrete multi-tone (DFT-spread 32QAM-DMT) signal over 20-km standard single-mode fiber (SSMF) utilizing directly modulated laser (DML). The experimental results show DFT-spread effectively reduces Peak-to-Average Power Ratio (PAPR) of DMT signal, and also well overcomes narrowband interference and high frequencies power attenuation. We compared different types of training sequence (TS) symbols and found that the optimized TS for channel estimation is the symbol with digital BPSK/QPSK modulation format due to its best performance against optical link noise during channel estimation.

Original language	English
Pages (from-to)	22962-22967
Number of pages	6
Journal	Optics Express
Volume	22
Issue number	19
DOIs	https://doi.org/10.1364/OE.22.022962
Publication status	Published - 22 Sept 2014
Externally published	Yes

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title = "Optimization of training sequence for DFT-spread DMT signal in optical access network with direct detection utilizing DML",

abstract = "We experimentally demonstrated the transmission of 79.86-Gb/s discrete-Fourier-transform spread 32QAM discrete multi-tone (DFT-spread 32QAM-DMT) signal over 20-km standard single-mode fiber (SSMF) utilizing directly modulated laser (DML). The experimental results show DFT-spread effectively reduces Peak-to-Average Power Ratio (PAPR) of DMT signal, and also well overcomes narrowband interference and high frequencies power attenuation. We compared different types of training sequence (TS) symbols and found that the optimized TS for channel estimation is the symbol with digital BPSK/QPSK modulation format due to its best performance against optical link noise during channel estimation.",

author = "Fan Li and Xinying Li and Jianjun Yu and Lin Chen",

note = "Publisher Copyright: {\textcopyright}2014 Optical Society of America.",

year = "2014",

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doi = "10.1364/OE.22.022962",

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journal = "Optics Express",

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T1 - Optimization of training sequence for DFT-spread DMT signal in optical access network with direct detection utilizing DML

AU - Li, Fan

AU - Li, Xinying

AU - Yu, Jianjun

AU - Chen, Lin

PY - 2014/9/22

Y1 - 2014/9/22

N2 - We experimentally demonstrated the transmission of 79.86-Gb/s discrete-Fourier-transform spread 32QAM discrete multi-tone (DFT-spread 32QAM-DMT) signal over 20-km standard single-mode fiber (SSMF) utilizing directly modulated laser (DML). The experimental results show DFT-spread effectively reduces Peak-to-Average Power Ratio (PAPR) of DMT signal, and also well overcomes narrowband interference and high frequencies power attenuation. We compared different types of training sequence (TS) symbols and found that the optimized TS for channel estimation is the symbol with digital BPSK/QPSK modulation format due to its best performance against optical link noise during channel estimation.

AB - We experimentally demonstrated the transmission of 79.86-Gb/s discrete-Fourier-transform spread 32QAM discrete multi-tone (DFT-spread 32QAM-DMT) signal over 20-km standard single-mode fiber (SSMF) utilizing directly modulated laser (DML). The experimental results show DFT-spread effectively reduces Peak-to-Average Power Ratio (PAPR) of DMT signal, and also well overcomes narrowband interference and high frequencies power attenuation. We compared different types of training sequence (TS) symbols and found that the optimized TS for channel estimation is the symbol with digital BPSK/QPSK modulation format due to its best performance against optical link noise during channel estimation.

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JO - Optics Express

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Optimization of training sequence for DFT-spread DMT signal in optical access network with direct detection utilizing DML

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