Laser linewidth tolerance of decision-aided maximum likelihood phase estimation in coherent optical M-ary PSK and QAM systems

S. Zhang; P. Y. Kam; Changyuan Yu; J. Chen

doi:10.1109/LPT.2009.2022750

Laser linewidth tolerance of decision-aided maximum likelihood phase estimation in coherent optical M-ary PSK and QAM systems

S. Zhang
, P. Y. Kam
, Changyuan Yu
, J. Chen

Research output: Journal article publication › Journal article › Academic research › peer-review

84 Citations (Scopus)

Abstract

This letter extends the decision-aided (DA) maximum likelihood (ML) phase estimation in an Mary phase-shift keying (PSK) system to quadrature amplitude modulation (QAM) signals. The block length effect is simulated for both M-ary PSK and QAM systems, and also investigated in M-ary PSK systems through analysis. Our results show that the tolerance of DA ML to laser linewidth for square 16-QAM can be increased by >10 times compared to the block Mth power scheme.

Original language	English
Pages (from-to)	1075-1077
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	21
Issue number	15
DOIs	https://doi.org/10.1109/LPT.2009.2022750
Publication status	Published - 1 Dec 2009
Externally published	Yes

Keywords

Coherent detection
Optical fiber communication

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

More information

10.1109/LPT.2009.2022750

Cite this

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title = "Laser linewidth tolerance of decision-aided maximum likelihood phase estimation in coherent optical M-ary PSK and QAM systems",

abstract = "This letter extends the decision-aided (DA) maximum likelihood (ML) phase estimation in an Mary phase-shift keying (PSK) system to quadrature amplitude modulation (QAM) signals. The block length effect is simulated for both M-ary PSK and QAM systems, and also investigated in M-ary PSK systems through analysis. Our results show that the tolerance of DA ML to laser linewidth for square 16-QAM can be increased by >10 times compared to the block Mth power scheme.",

keywords = "Coherent detection, Optical fiber communication",

author = "S. Zhang and Kam, \{P. Y.\} and Changyuan Yu and J. Chen",

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AU - Zhang, S.

AU - Kam, P. Y.

AU - Yu, Changyuan

AU - Chen, J.

PY - 2009/12/1

Y1 - 2009/12/1

N2 - This letter extends the decision-aided (DA) maximum likelihood (ML) phase estimation in an Mary phase-shift keying (PSK) system to quadrature amplitude modulation (QAM) signals. The block length effect is simulated for both M-ary PSK and QAM systems, and also investigated in M-ary PSK systems through analysis. Our results show that the tolerance of DA ML to laser linewidth for square 16-QAM can be increased by >10 times compared to the block Mth power scheme.

AB - This letter extends the decision-aided (DA) maximum likelihood (ML) phase estimation in an Mary phase-shift keying (PSK) system to quadrature amplitude modulation (QAM) signals. The block length effect is simulated for both M-ary PSK and QAM systems, and also investigated in M-ary PSK systems through analysis. Our results show that the tolerance of DA ML to laser linewidth for square 16-QAM can be increased by >10 times compared to the block Mth power scheme.

KW - Coherent detection

KW - Optical fiber communication

UR - https://www.scopus.com/pages/publications/70349739277

U2 - 10.1109/LPT.2009.2022750

DO - 10.1109/LPT.2009.2022750

M3 - Journal article

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JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 15

ER -

Laser linewidth tolerance of decision-aided maximum likelihood phase estimation in coherent optical M-ary PSK and QAM systems

Abstract

Keywords

ASJC Scopus subject areas

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