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

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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 languageEnglish
Pages (from-to)43-49
Number of pages7
JournalOptical Fiber Technology
Publication statusPublished - 2016 Dec 1

Bibliographical note

Funding Information:
This work was supported by the ICT R&D program of MSIP/IITP , Republic of Korea, [ B0101-16-0131 , Next-generation coherent optical access physical network].

Publisher Copyright:
© 2016 Elsevier Inc.

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'IQ imbalance tolerable parallel-channel DMT transmission for coherent optical OFDMA access network'. Together they form a unique fingerprint.

Cite this