Decision feedback-based IQ imbalance estimation algorithm for CO-OFDM systems

Du Juan; Xiao Shilin

doi:10.13756/j.gtxyj.2015.03.003

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Decision feedback-based IQ imbalance estimation algorithm for CO-OFDM systems

- Decision feedback-based IQ imbalance estimation algorithm for CO-OFDM systems
- Study on Optical communication Issue 3, Pages: 9-11(2015)
- 作者机构：
  
  上海交通大学区域光纤通信网与新型光通信系统国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2015.03.003
  CLC： TN929.1
- Published：2015，
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[1]杜娟,肖石林.CO-OFDM系统中基于DF的IQ不平衡估计[J].光通信研究,2015(03):9-11.

Du Juan, Xiao Shilin. Decision feedback-based IQ imbalance estimation algorithm for CO-OFDM systems. [J]. (3):9-11(2015)
[1]杜娟,肖石林.CO-OFDM系统中基于DF的IQ不平衡估计[J].光通信研究,2015(03):9-11. DOI： 10.13756/j.gtxyj.2015.03.003.

Du Juan, Xiao Shilin. Decision feedback-based IQ imbalance estimation algorithm for CO-OFDM systems. [J]. (3):9-11(2015) DOI： 10.13756/j.gtxyj.2015.03.003.

摘要

针对发射端频率选择性IQ（同相/正交相）不平衡对CO-OFDM（相干光正交频分复用）系统传输性能的影响

提出一种基于DF（判决反馈）的IQ不平衡估计算法

并与传统的PA（导频插入）算法进行了对比。仿真研究和理论推演表明

所提算法可以有效地估计IQ不平衡和信道参数

提高系统的BER（误码率）性能。

Abstract

In view of the influence of the frequency-selective transmitter In-phase/Quadrature-phase（IQ）imbalance on the transmission performance of Coherent Optical Orthogonal Frequency Division Multiplexing（CO-OFDM）systems

this paper proposes a Decision Feedback（DF）-based IQ imbalance estimation algorithm and compares it with the traditional Pilot Insertion（PI）algorithm.Simulation research and theoretical deduction results indicate that the proposed algorithm can not only effectively estimate IQ imbalance and channel parameters

but also improve the system BER performance.

关键词

相干光正交频分复用同相/正交相不平衡判决反馈

Keywords

CO-OFDMIQ imbalanceDF

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Center for Information Photonics & Communications,School of Information Science & Technology,Southwest Jiaotong University

Department of Electrical and Computer Engineering,National University of Singapore

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