A hybrid IQ imbalance compensation method for optical OFDM transmission

Abdullah Al Amin, Sander L. Jansen, Hidenori Takahashi, Itsuro Morita, Hideaki Tanaka

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Transmitter and receiver IQ imbalance causes image interference that degrades performance in high capacity and high spectral efficiency optical orthogonal frequency division multiplexing (OFDM) schemes. Digital compensation is an attractive method to relax component specifications. In this paper we report the details of a hybrid compensation method for IQ imbalance compensation, comprising of orthogonal training symbol-based method for transmitter-side compensation and an iterative image reduction-based method for receiver-side imbalance compensation. We demonstrate performance improvement using the hybrid method in presence of frequency dependent imbalance by both simulation and back-toback direct detection optical OFDM experiment. We report on the tolerable limit of transmitter IQ imbalance under presence of carrier frequency offset.

Original languageEnglish
Pages (from-to)4859-4866
Number of pages8
JournalOptics Express
Issue number5
Publication statusPublished - 2010 Mar 1
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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