IQ imbalance tolerable parallel-channel DMT transmission for coherent optical OFDMA access network

Sang Min Jung; Kyoung Hak Mun; Sun Young Jung; Sang Kook Han

doi:10.1016/j.yofte.2016.09.006

IQ imbalance tolerable parallel-channel DMT transmission for coherent optical OFDMA access network

Sang Min Jung, Kyoung Hak Mun, Sun Young Jung, Sang Kook Han

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

Phase diversity of coherent optical communication provides spectrally efficient higher-order modulation for optical communications. However, in-phase/quadrature (IQ) imbalance in coherent optical communication degrades transmission performance by introducing unwanted signal distortions. In a coherent optical orthogonal frequency division multiple access (OFDMA) passive optical network (PON), IQ imbalance-induced signal distortions degrade transmission performance by interferences of mirror subcarriers, inter-symbol interference (ISI), and inter-channel interference (ICI). We propose parallel-channel discrete multitone (DMT) transmission to mitigate transceiver IQ imbalance-induced signal distortions in coherent orthogonal frequency division multiplexing (OFDM) transmissions. We experimentally demonstrate the effectiveness of parallel-channel DMT transmission compared with that of OFDM transmission in the presence of IQ imbalance.

Original language	English
Pages (from-to)	43-49
Number of pages	7
Journal	Optical Fiber Technology
Volume	32
DOIs	https://doi.org/10.1016/j.yofte.2016.09.006
Publication status	Published - 2016 Dec 1

All Science Journal Classification (ASJC) codes

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

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10.1016/j.yofte.2016.09.006

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Jung, S. M., Mun, K. H., Jung, S. Y., & Han, S. K. (2016). IQ imbalance tolerable parallel-channel DMT transmission for coherent optical OFDMA access network. Optical Fiber Technology, 32, 43-49. https://doi.org/10.1016/j.yofte.2016.09.006

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abstract = "Phase diversity of coherent optical communication provides spectrally efficient higher-order modulation for optical communications. However, in-phase/quadrature (IQ) imbalance in coherent optical communication degrades transmission performance by introducing unwanted signal distortions. In a coherent optical orthogonal frequency division multiple access (OFDMA) passive optical network (PON), IQ imbalance-induced signal distortions degrade transmission performance by interferences of mirror subcarriers, inter-symbol interference (ISI), and inter-channel interference (ICI). We propose parallel-channel discrete multitone (DMT) transmission to mitigate transceiver IQ imbalance-induced signal distortions in coherent orthogonal frequency division multiplexing (OFDM) transmissions. We experimentally demonstrate the effectiveness of parallel-channel DMT transmission compared with that of OFDM transmission in the presence of IQ imbalance.",

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