IQ imbalance in optical DD-OFDM back-to-back and transmission systems

Xin Ying Li; Chun Ning Hou; Jun Wen Zhang; Wu Liang Fang; Bo Huang; Shu Min Zou; Yu Feng Shao; Nan Chi

doi:10.3969/j.issn.1003-501X.2010.03.013

IQ imbalance in optical DD-OFDM back-to-back and transmission systems

Xin Ying Li^*, Chun Ning Hou, Jun Wen Zhang, Wu Liang Fang, Bo Huang, Shu Min Zou, Yu Feng Shao, Nan Chi

^*Corresponding author for this work

Fudan University

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

3 Citations (Scopus)

Abstract

In-phase/Quadrature-phase (IQ) imbalance can result in severe performance degradation in optical Direct-detection Orthogonal-frequency-division-multiplexing (DD-OFDM) systems. We build two optical back-to-back DD-OFDM systems, which implement Double-sideband (DSB) and Single-sideband (SSB) modulation, respectively. The tolerance to IQ imbalance of these two systems is analyzed and compared by using Error Vector Magnitude (EVM) and Symbol Error Rate (SER). It is found that, in the back-to-back case, the DSB system has stronger robustness to IQ imbalance than the SSB System. We further build two optical DD-OFDM systems each with 40-km transmission, which respectively implement DSB and SSB transmission. Similarly, the tolerance to IQ imbalance of these two systems are analyzed and compared in terms of EVM and SER. It is found that, however, in the case of 40-km transmission, the SSB system has stronger robustness to IQ imbalance than the DSB system. As a result, it is concluded that, in the case of transmission, SSB modulation can enhance the tolerance to IQ imbalance of DD-OFDM systems.

Original language	English
Pages (from-to)	66-71
Number of pages	6
Journal	Guangdian Gongcheng/Opto-Electronic Engineering
Volume	37
Issue number	3
DOIs	https://doi.org/10.3969/j.issn.1003-501X.2010.03.013
Publication status	Published - Mar 2010
Externally published	Yes

Keywords

DD-OFDM
EVM
IQ) imbalance
Optical communications
SER

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10.3969/j.issn.1003-501X.2010.03.013

Cite this

@article{11cf7eb0c31b40e2aca913a01efcb4fc,

title = "IQ imbalance in optical DD-OFDM back-to-back and transmission systems",

abstract = "In-phase/Quadrature-phase (IQ) imbalance can result in severe performance degradation in optical Direct-detection Orthogonal-frequency-division-multiplexing (DD-OFDM) systems. We build two optical back-to-back DD-OFDM systems, which implement Double-sideband (DSB) and Single-sideband (SSB) modulation, respectively. The tolerance to IQ imbalance of these two systems is analyzed and compared by using Error Vector Magnitude (EVM) and Symbol Error Rate (SER). It is found that, in the back-to-back case, the DSB system has stronger robustness to IQ imbalance than the SSB System. We further build two optical DD-OFDM systems each with 40-km transmission, which respectively implement DSB and SSB transmission. Similarly, the tolerance to IQ imbalance of these two systems are analyzed and compared in terms of EVM and SER. It is found that, however, in the case of 40-km transmission, the SSB system has stronger robustness to IQ imbalance than the DSB system. As a result, it is concluded that, in the case of transmission, SSB modulation can enhance the tolerance to IQ imbalance of DD-OFDM systems.",

keywords = "DD-OFDM, EVM, IQ) imbalance, Optical communications, SER",

author = "Li, {Xin Ying} and Hou, {Chun Ning} and Zhang, {Jun Wen} and Fang, {Wu Liang} and Bo Huang and Zou, {Shu Min} and Shao, {Yu Feng} and Nan Chi",

year = "2010",

month = mar,

doi = "10.3969/j.issn.1003-501X.2010.03.013",

language = "English",

volume = "37",

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journal = "Guangdian Gongcheng/Opto-Electronic Engineering",

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publisher = "Chinese Academy of Sciences",

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TY - JOUR

T1 - IQ imbalance in optical DD-OFDM back-to-back and transmission systems

AU - Li, Xin Ying

AU - Hou, Chun Ning

AU - Zhang, Jun Wen

AU - Fang, Wu Liang

AU - Huang, Bo

AU - Zou, Shu Min

AU - Shao, Yu Feng

AU - Chi, Nan

PY - 2010/3

Y1 - 2010/3

N2 - In-phase/Quadrature-phase (IQ) imbalance can result in severe performance degradation in optical Direct-detection Orthogonal-frequency-division-multiplexing (DD-OFDM) systems. We build two optical back-to-back DD-OFDM systems, which implement Double-sideband (DSB) and Single-sideband (SSB) modulation, respectively. The tolerance to IQ imbalance of these two systems is analyzed and compared by using Error Vector Magnitude (EVM) and Symbol Error Rate (SER). It is found that, in the back-to-back case, the DSB system has stronger robustness to IQ imbalance than the SSB System. We further build two optical DD-OFDM systems each with 40-km transmission, which respectively implement DSB and SSB transmission. Similarly, the tolerance to IQ imbalance of these two systems are analyzed and compared in terms of EVM and SER. It is found that, however, in the case of 40-km transmission, the SSB system has stronger robustness to IQ imbalance than the DSB system. As a result, it is concluded that, in the case of transmission, SSB modulation can enhance the tolerance to IQ imbalance of DD-OFDM systems.

AB - In-phase/Quadrature-phase (IQ) imbalance can result in severe performance degradation in optical Direct-detection Orthogonal-frequency-division-multiplexing (DD-OFDM) systems. We build two optical back-to-back DD-OFDM systems, which implement Double-sideband (DSB) and Single-sideband (SSB) modulation, respectively. The tolerance to IQ imbalance of these two systems is analyzed and compared by using Error Vector Magnitude (EVM) and Symbol Error Rate (SER). It is found that, in the back-to-back case, the DSB system has stronger robustness to IQ imbalance than the SSB System. We further build two optical DD-OFDM systems each with 40-km transmission, which respectively implement DSB and SSB transmission. Similarly, the tolerance to IQ imbalance of these two systems are analyzed and compared in terms of EVM and SER. It is found that, however, in the case of 40-km transmission, the SSB system has stronger robustness to IQ imbalance than the DSB system. As a result, it is concluded that, in the case of transmission, SSB modulation can enhance the tolerance to IQ imbalance of DD-OFDM systems.

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KW - SER

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IQ imbalance in optical DD-OFDM back-to-back and transmission systems

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Keywords

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