自动重传请求机制在空间光通信中的性能

耿驰; 吴茗蔚; 王振永; 宋天宇; 甘培润

doi:10.3788/OPE.20162413.0309

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自动重传请求机制在空间光通信中的性能

更新时间：2020-08-13

- 自动重传请求机制在空间光通信中的性能
- Performance of ARQ scheme over FSO system
- 光学精密工程 2016年24卷第10s期页码：309-315
- 作者机构：
  
  1. 哈尔滨工业大学电子与信息工程学院,黑龙江哈尔滨,150001
  2. 浙江科技学院信息与电子工程学院,浙江杭州,310023
  3. 新加坡国立大学电子与计算机工程学院新加坡,117583
  4. 苏州工业园区新国大研究院先进微电子器件中心,江苏苏州,215123
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目（No.61302112，No.61571316）();钱江人才计划资助项目（No.QJD1402023）()
- DOI：10.3788/OPE.20162413.0309
  中图分类号： TN929.1
- 收稿日期：2016-05-23，
  
  修回日期：2016-06-12，
  
  纸质出版日期：2016-11-14
- 稿件说明：
移动端阅览
耿驰, 吴茗蔚, 王振永等. 自动重传请求机制在空间光通信中的性能[J]. 光学精密工程, 2016,24(10s): 309-315

GENG Chi, WU Ming-wei, WANG Zhen-yong etc. Performance of ARQ scheme over FSO system[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 309-315
耿驰, 吴茗蔚, 王振永等. 自动重传请求机制在空间光通信中的性能[J]. 光学精密工程, 2016,24(10s): 309-315 DOI： 10.3788/OPE.20162413.0309.

GENG Chi, WU Ming-wei, WANG Zhen-yong etc. Performance of ARQ scheme over FSO system[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 309-315 DOI： 10.3788/OPE.20162413.0309.

摘要

在自由空间光通信（FSO）系统中，为了公平分析使用自动重传请求机制的性能，提出了有效平均接受功率。对该系统的误比特率、吞吐量等系统性能进行了研究。通过计算自由空间光通信中数据帧重传时损耗的能量，证明了当系统在足够高的平均接收功率的条件下能获得很好的性能增益。实验结果表明：在弱湍流和强湍流的信道环境下，当平均接收功率分别高于-29.2 dBm和-31.7 dBm时，FSO系统使用ARQ机制才是有效的。当传统ARP在弱湍流信道环境下和强湍流信道环境下分别高于-24.2 dBm和-17.2 dBm时，系统性能会有显著的提高；而当平均接收功率较低时，由于重传次数大，系统为数据帧的重传消耗大量能量，因此系统性能很差。

Abstract

In order to fairly analyze the performance with Automatic Repeat Request (ARQ) mechanism in Free Space Optical communications (FSO)

the effective ARP is proposed. The performance of the system was studied

involving bit error probability and throughput. By evaluating the energy consumption attribute to frame retransmissions in FSO

good performance gain was achieved only for reasonably high average received power. The experimental results indicate that the ARQ scheme serves effectively only when ARP is higher than -29.2 dBm in weak turbulence channel and -31.7 dBm in strong turbulence channel. Furthermore when the conventional ARPs were higher than -24.2 dBm and -17.2 dBm respectively in weak turbulence channel and strong turbulence channel

the performance of the FSO system is improved significantly

whereas it is poor at low ARP due to the massive retransmissions and the huge energy consumption.

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Keywords

references

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