Study on CO-OFDM system performance improvement by SLM-Clipping

Zhang Siyao; Yan Lianshan; Ye Jia; Yi Anlin

doi:10.13756/j.gtxyj.2013.05.004

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Study on CO-OFDM system performance improvement by SLM-Clipping

- Study on CO-OFDM system performance improvement by SLM-Clipping
- Study on Optical communication Issue 5, Pages: 19-20(2013)
- 作者机构：
  
  西南交通大学信息科学与技术学院信息光子与通信研究中心
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2013.05.004
  CLC： TN761
- Published：2013，
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[1]张斯尧,闫连山,叶佳,易安林.SLM结合限幅算法提高CO-OFDM系统性能的研究[J].光通信研究,2013(05):19-20+33.

Zhang Siyao, Yan Lianshan, Ye Jia, et al. Study on CO-OFDM system performance improvement by SLM-Clipping. [J]. (5):19-20(2013)
[1]张斯尧,闫连山,叶佳,易安林.SLM结合限幅算法提高CO-OFDM系统性能的研究[J].光通信研究,2013(05):19-20+33. DOI： 10.13756/j.gtxyj.2013.05.004.

Zhang Siyao, Yan Lianshan, Ye Jia, et al. Study on CO-OFDM system performance improvement by SLM-Clipping. [J]. (5):19-20(2013) DOI： 10.13756/j.gtxyj.2013.05.004.

摘要

分析了CO-OFDM（相干光正交频分复用）系统中各个子载波之间的序列相关性对系统性能的影响

并提出了使用SLM（选择映射）法结合限幅算法来降低CO-OFDM各个子载波之间的序列相关性

抑制系统中FWM（四波混频）效应导致的损伤

以提高CO-OFDM系统性能。理论分析和仿真结果表明

该方法在误码率为10-3的情况下

与SLM法和限幅算法相比

灵敏度分别提高约1.8和3.4dB。

Abstract

On the basis of analyzing the effects of the serial correlation among the subcarriers of the CO-OFDM system on its performances

this paper proposes a new approach

in which the SeLected Mapping（SLM）method and the clipping method are combined.This approach optimizes the subcarrier serial correlation and mitigates the Four-Wave Mixing（FWM）effects that are mainly dependent on the former

thus improving the system performance.Theoretical analysis and MATLAB simulation results show that compared with SLM and clipping methods

this approach improves the sensitivity by about 1.8 and 3.4 dB respectively at the BER of

0-3.

关键词

相干光正交频分复用序列相关性四波混频选择映射法限幅法

Keywords

CO-OFDMserial correlationFWMSLM methodclipping method

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