Performance analysis of DPSK modulation-based free space optical communications

Zhang Huiying; Li Hongzuo

doi:10.13756/j.gtxyj.2015.06.016

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Performance analysis of DPSK modulation-based free space optical communications

- Performance analysis of DPSK modulation-based free space optical communications
- Study on Optical communication Issue 6, Pages: 61-64(2015)
- 作者机构：
  
  1. 吉林化工学院信息与控制工程学院
  2. 长春理工大学空间光通信研究所
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2015.06.016
  CLC： TN929.1
- Published：2015，
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[1]张慧颖,李洪祚.基于DPSK调制的自由空间光通信性能分析[J].光通信研究,2015(06):61-64.

Zhang Huiying, Li Hongzuo. Performance analysis of DPSK modulation-based free space optical communications. [J]. (6):61-64(2015)
[1]张慧颖,李洪祚.基于DPSK调制的自由空间光通信性能分析[J].光通信研究,2015(06):61-64. DOI： 10.13756/j.gtxyj.2015.06.016.

Zhang Huiying, Li Hongzuo. Performance analysis of DPSK modulation-based free space optical communications. [J]. (6):61-64(2015) DOI： 10.13756/j.gtxyj.2015.06.016.

摘要

介绍了相干DPSK（差分相移键控）的调制和解调原理

并对零差解调、外差解调和MZI（马赫-曾德干涉）解调三种相干解调方式进行了理论分析。利用Matlab和Optisystem仿真软件构建了基于DPSK调制的FSO（自由空间光通信）系统

得到不同条件下系统误码性能;对三种解调方式进行了仿真

仿真结果表明

零差相干解调方式具有更好的误码性能

更适合FSO。

Abstract

In this paper

the modulation and demodulation principles for the coherent Differential Phase Shift Keying（DPSK）are briefly introduced and theoretical analysis of three coherent demodulation modes

i.e.homodyne

heterodyne and Mach-Zehnder Interference（MZI）demodulations

is made.Using Matlab and Optisystem simulation software

a DPSK modulationbased Free Space Optical（FSO）communication system is built

the effects on the system BER performance under different conditions obtained and the three demodulation modes simulated.The simulation results show that homodyne coherent detection with better BER performance is most suitable for FSO.

关键词

差分相移键控零差解调外差解调马赫-曾德干涉解调

Keywords

DPSKhomodyne demodulationheterodyne demodulationMZI demodulation

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吉林化工学院信息与控制工程学院长春理工大学空间光通信研究所

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