Comparative BER performance analysis of OOK and DPSK modulations in Gamma-Gamma channels

Zhang Huiying

doi:10.13756/j.gtxyj.2015.04.020

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Comparative BER performance analysis of OOK and DPSK modulations in Gamma-Gamma channels

- Comparative BER performance analysis of OOK and DPSK modulations in Gamma-Gamma channels
- Study on Optical communication Issue 4, 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
  3. 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
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2015.04.020
  CLC： TN929.1
- Published：2015，
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[1]张慧颖.Gamma-Gamma信道下OOK与DPSK调制误码性能分析[J].光通信研究,2015(04):61-64.

Zhang Huiying. Comparative BER performance analysis of OOK and DPSK modulations in Gamma-Gamma channels. [J]. (4):61-64(2015)
[1]张慧颖.Gamma-Gamma信道下OOK与DPSK调制误码性能分析[J].光通信研究,2015(04):61-64. DOI： 10.13756/j.gtxyj.2015.04.020.

Zhang Huiying. Comparative BER performance analysis of OOK and DPSK modulations in Gamma-Gamma channels. [J]. (4):61-64(2015) DOI： 10.13756/j.gtxyj.2015.04.020.

摘要

从理论和实验两方面对自由空间光通信中常用的两种调制方式进行性能比较分析

旨在找出一种最适合的调制方法抑制大气湍流。在分析Gamma-Gamma信道下OOK（开关键控）和DPSK（差分相移键控）调制的误码率时

将广义超几何方法引入分析。利用Matlab软件搭建系统

通过实验可知

采取相干及平衡探测的DPSK调制时性能要比基于OOK调制的直接探测高出3.21dB;通过对双管平衡探测和单管探测进行实验

结果表明

双管平衡探测的信噪比优于单管探测

约提高21.6dB。因此

基于DPSK平衡探测的相干通信方案具有可行性和优越性。

Abstract

This paper makes a comparative analysis of the performances of two modulation modes commonly used in free space optical communications theoretically and experimentally

aimed at finding an optimal modulation method for suppressing atmospheric turbulences.In analyzing the BER of OOK and DPSK modulations in Gamma-Gamma channels

it introduces the generalized hypergeometric method to the analysis and establishes a system for simulation by using Marlab.The experimental results indicate that the performance of DPSK modulation-based coherent and balanced detection is 3.21 dB higher than that of OOK modulation-based direct detection and that in the comparison between the dual-tube balanced detection and the single-tube detection

the former is superior in BER

about 21.6dB higher

verifying that DPSK balanced detection-based scheme is feasible and superior.

关键词

大气湍流平衡探测开关键控差分相移键控

Keywords

atmospheric turbulencebalanced detectionOOKDPSK

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College of Optoelectronic Engineering,Nanjing University of Posts & Telecommunications

State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology

Department of Communication Engineering,Faculty of Information Engineering,Shenzhen University

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