Joint compensation for laser phase noise and frequency offset in CO-OFDM systems

Li Wei; Zhu Weiwei; Chen Baojing; Yang Shibo; Liao Wei; Gao Guanjun

doi:10.13756/j.gtxyj.2015.04.002

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Joint compensation for laser phase noise and frequency offset in CO-OFDM systems

- Joint compensation for laser phase noise and frequency offset in CO-OFDM systems
- Study on Optical communication Issue 4, Pages: 4-6(2015)
- 作者机构：
  
  1. 国网甘肃省电力公司信息通信公司
  2. 北京邮电大学信息光子学与光通信国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2015.04.002
  CLC： TN929.53
- Published：2015，
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[1]李炜,祝唯微,陈宝靖,杨仕博,廖伟,高冠军.CO-OFDM系统中相位噪声和频偏的联合补偿[J].光通信研究,2015(04):4-6+15.

Li Wei, Zhu Weiwei, Chen Baojing, et al. Joint compensation for laser phase noise and frequency offset in CO-OFDM systems. [J]. (4):4-6(2015)
[1]李炜,祝唯微,陈宝靖,杨仕博,廖伟,高冠军.CO-OFDM系统中相位噪声和频偏的联合补偿[J].光通信研究,2015(04):4-6+15. DOI： 10.13756/j.gtxyj.2015.04.002.

Li Wei, Zhu Weiwei, Chen Baojing, et al. Joint compensation for laser phase noise and frequency offset in CO-OFDM systems. [J]. (4):4-6(2015) DOI： 10.13756/j.gtxyj.2015.04.002.

摘要

激光器频偏和相位噪声是限制CO-OFDM（相干光正交频分复用）系统性能的重要因素。文章提出了CO-OFDM系统中基于差分预编码和MCDD（多载波差分检测）算法的激光器相位噪声和频偏联合补偿方案。对CO-OFDM系统中的频偏和激光器相位噪声作用机理和基于MCDD的补偿方案机制进行了理论推导

并在不同的光信噪比、激光器频偏和线宽条件下进行了系统仿真。仿真结果表明

基于差分预编码和MCDD的联合补偿方法对CO-OFDM系统中的激光器频偏和相位噪声有较好的补偿效果和较大的补偿范围

在不引入系统开销的同时

可有效改善CO-OFDM系统性能。

Abstract

Laser frequency offset and phase noise are important factors that limit the Coherent Optical Orthogonal Frequency Division Multiplexing（CO-OFDM）system performances.This paper proposes a novel scheme based on differential pre-coding and Multi-Carrier Differential Detection（MCDD）algorithm

which can jointly compensate the laser phase noise and frequency offset

theoretically derives the principle of the frequency offset and laser phase noise in CO-OFDM systems and the working mechanism of the MCDD-based compensation scheme

and conducts system simulations in different OSNRs

laser frequency offsets and linewidths.The simulation results indicate that this scheme has good compensation effects and large compensation scope and effectively improves the CO-OFDM system performances even without introducing extra system overhead.

关键词

相干光正交光频分复用激光器频偏激光器相位噪声补偿

Keywords

CO-OFDMlaser frequency offsetlaser phase noise compensation

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