Analysis of the influence of dispersion and loss on CWDM in 5G fronthaul application

龙晨; 方伟津; 高远鹏

doi:10.13992/j.cnki.tetas.2020.07.007

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Analysis of the influence of dispersion and loss on CWDM in 5G fronthaul application

更新时间：2026-04-20

- Analysis of the influence of dispersion and loss on CWDM in 5G fronthaul application
- Vol. 33, Issue 7, Pages: 29-35(2020)
- 作者机构：
  
  中国移动通信集团设计院有限公司广东分公司
- 作者简介：
- 基金信息：
- DOI：10.13992/j.cnki.tetas.2020.07.007
  CLC： TN929.5
- Published：2020
- 稿件说明：
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[1]龙晨,方伟津,高远鹏.色散与损耗对无源波分在5G前传应用中的影响分析[J].电信工程技术与标准化,2020,33(07):29-35.

龙晨, 方伟津, 高远鹏. Analysis of the influence of dispersion and loss on CWDM in 5G fronthaul application[J]. 2020, 33(7): 29-35.
[1]龙晨,方伟津,高远鹏.色散与损耗对无源波分在5G前传应用中的影响分析[J].电信工程技术与标准化,2020,33(07):29-35. DOI： 10.13992/j.cnki.tetas.2020.07.007.

龙晨, 方伟津, 高远鹏. Analysis of the influence of dispersion and loss on CWDM in 5G fronthaul application[J]. 2020, 33(7): 29-35. DOI： 10.13992/j.cnki.tetas.2020.07.007.

摘要

无源波分在5G前传网络中得到了广泛的应用

但由于光纤色散在粗波分复用系统中无法忽略

且迫于成本原因没有做色散补偿

导致复用比为1:12和1:18的无源波分后6波存在较大色散代价

限制了其传输距离

成为了无源波分应用的一大瓶颈。本文从光纤色散的原理出发

结合传输链路损耗进行综合分析

给出了两者与传输距离间的关系

并根据厂家提供的参数建立覆盖模型

对常见无源波分类型进行覆盖分析

结合分析结果给出了无源波分的4种主要应用场景与使用建议。

Abstract

CWDM has been widely used in 5 G fronthaul network

but fi ber dispersion can not be ignored in the CWDM system

and no dispersion compensation is made due to cost reasons

which leads to a large dispersion cost in the last 6-waves of CWDM with multiplexing ratio of 1:12 and 1:18

which limits its transmission distance and becomes a major limit in the application of CWDM. This paper gives a comprehensive analysis based on dispersion principles and the loss of transmission link

revealing the relationship between dispersion

loss and transmission distance. Based on the parameters provided by the manufacturer

a coverage model is established

and coverage analysis is performed for common CWDM types. Finally

according to the analysis results

four main use cases and recommendations for use of CWDM are given at the end of the paper.

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Keywords

references

基于无源波分复用的5G前传扩芯方案 [J]. 苏毅,冯邦宇. 无线互联科技 . 2019(12)

BBU基带池集中设置的探讨和建议 [J]. 蔡世辉. 邮电设计技术 . 2014(05)

C-RAN架构下传输技术的探讨 [J]. 王蒙. 中国科技投资 . 2012(33)

光纤色散对光纤通信系统中继距离主要影响分析 [J]. 粟小玲,朱春祥. 信息通信 . 2008(02)

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中国移动通信集团设计院有限公司江苏分公司

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