| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4957105 | Optical Fiber Technology | 2016 | 7 Pages |
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.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Sang-Min Jung, Kyoung-Hak Mun, Sun-Young Jung, Sang-Kook Han,