High phase noise tolerant pilot-tone-aided DP-QPSK optical communication systems

Zhang, Xu; Pang, Xiaodan; Deng, Lei; Zibar, Darko; Monroy, Idelfonso Tafur; Younce, Richard

doi:10.1364/oe.20.019990

Cited by 15 publications

(3 citation statements)

References 10 publications

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“…[19][20][21][22][23][24][25] In the transmission channels, the pilot tone experiences the same impairments as the data signal, thus it can jointly compensate for the laser PN, frequency offset (FO), and fiber nonlinearity. [19][20][21][22][23][24][25] In the transmission channels, the pilot tone experiences the same impairments as the data signal, thus it can jointly compensate for the laser PN, frequency offset (FO), and fiber nonlinearity.…”

Section: Introductionmentioning

confidence: 99%

“…[19][20][21][22][23][24][25] In the transmission channels, the pilot tone experiences the same impairments as the data signal, thus it can jointly compensate for the laser PN, frequency offset (FO), and fiber nonlinearity. 21, an optically inserted pilot tone can be enabled by external double-sideband modulation. 19, the pilot tone can be inserted in the digital domain to compensate for the laser PN, but single-sideband (SSB) modulation and demodulation of both I and Q baseband signals need to be performed at both the Tx and the Rx ends.…”

Section: Introductionmentioning

confidence: 99%

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Optical domain scheme of pilot-tone-aided carrier phase recovery for Nyquist single-carrier optical communication system

Zhang

Lin

et al. 2014

Opt. Eng

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We propose an optical domain pilot-aided carrier phase recovery (PA-CPR) scheme used in a single-carrier Nyquist system. A comprehensive mathematical description of the proposed PA-CPR scheme is presented. Optimal parameters for the system are obtained through optimizations. Furthermore, we propose the two-stage PA-CPR algorithm combinations which use the maximum likelihood or constellation transformation phase estimation as the second stage just after the pilot phase compensation. We also make the evaluation and comparison of the linewidth tolerance performances among the proposed two-stage PA-CPR algorithm combinations and other typical CPR algorithms in a 28-Gbaud Nyquist polarization-division multiplexed (PDM)-16QAM optical communication system. The calculation results show that the proposed twostage PA-CPR algorithm combinations, which have lower complexities, show better performances than others.

show abstract

Section: Introductionmentioning

confidence: 99%

“…[19][20][21][22][23][24][25] In the transmission channels, the pilot tone experiences the same impairments as the data signal, thus it can jointly compensate for the laser PN, frequency offset (FO), and fiber nonlinearity. 21, an optically inserted pilot tone can be enabled by external double-sideband modulation. 19, the pilot tone can be inserted in the digital domain to compensate for the laser PN, but single-sideband (SSB) modulation and demodulation of both I and Q baseband signals need to be performed at both the Tx and the Rx ends.…”

Section: Introductionmentioning

confidence: 99%

Optical domain scheme of pilot-tone-aided carrier phase recovery for Nyquist single-carrier optical communication system

Zhang

Lin

et al. 2014

Opt. Eng

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“…In [18], the authors propose a DFE to enhance the tolerance of digital signal processing to phase noise.…”

Section: Introductionmentioning

confidence: 99%

Decision-Feedback Equalization of Bandwidth-Constrained N-WDM Coherent Optical Communication Systems

Fickers

Ghazisaeidi²,

Salsi³

et al. 2013

J. Lightwave Technol.

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Abstract-Nyquist Wavelength division multiplexing (N-WDM), is a promising scheme in order to enhance the spectral efficiency of future coherent optical communication systems. In N-WDM systems, the channel bandwidth and spacing are selected to maximize the spectral efficiency while maintaining acceptable levels of inter-carrier and inter symbol interference. To further increase the spectral efficiency, bandwidth constrained N-WDM, where baudrate is higher than channel bandwidth can be considered. We propose to combine the bandwidth-constrained N-WDM scheme with a decision feedback equalizer (DFE) designed according to the minimum mean square error (MMSE) criterion. We show that the enhanced resilience to the inter symbol interference offered by DFE provides an effective gain on spectral efficiency. We compare system benefits of DFE and maximum a posteriori sequence detection (MAP) for coherent optical receivers, and show that DFE is as efficient as MAP in mitigating inter symbol interference at a considerably lower complexity.

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Measurement of Active Optical Fibers

Xiao¹,

Tafti²,

Zareanborji³

et al. 2018

Handbook of Optical Fibers

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High phase noise tolerant pilot-tone-aided DP-QPSK optical communication systems

Cited by 15 publications

References 10 publications

Optical domain scheme of pilot-tone-aided carrier phase recovery for Nyquist single-carrier optical communication system

Optical domain scheme of pilot-tone-aided carrier phase recovery for Nyquist single-carrier optical communication system

Decision-Feedback Equalization of Bandwidth-Constrained N-WDM Coherent Optical Communication Systems

Measurement of Active Optical Fibers

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