GSM900载波池光纤直放站使用说明书

GSM900载波池光纤直放站

使用说明书

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上海欣民通信技术有限公司

GSM900载波池光纤直放站使用说明书

目 录

一、 二、 三、

概述 ···························································································· 3 主要特点 ······················································································ 5 系统组成 ······················································································ 6

3.1 系统框图 ·········································································································································· 6 3.2 工作原理 ·········································································································································· 6 3.3 技术指标 ·········································································································································· 7 3.4控制器(本地 RDM) 接口 ··············································································································· 7 3.5 机械参数 ·········································································································································· 8 3.6电源参数 ··········································································································································· 8 3.7操作和维护 ······································································································································· 8 3.8 电脑的必备配置 ···························································································································· 8

四、 五、

设备开通注意事项 ········································································ 10 安装 ··························································································· 11

5.1 安装注意事项 ······························································································································ 11 5.2 安装步骤 ······································································································································ 11

六、 直放站调试中的主要问题 ······························································· 15

6.1 信号自激 ······································································································································ 15 6.2 信号切换频繁 ······························································································································ 15 6.3 上行链路噪声提高施主基站接收灵敏度降低 ·········································································· 16

附：《监控使用说明手册》 ········································································ 18

1监控系统总述 ···································································································································· 18 1.1监控系统的组成 ·························································································· 18 1.2监控系统的分类 ·························································································· 18 2监控系统的硬件说明 ························································································································ 19 2.1监控板说明 ································································································ 19

GSM900光纤直放站使用说明书 上海欣民通信技术有限公司 地址：上海市邯郸路80号 电话：86-21-65368000 传真：86-21-65368886 第 1 页

GSM900载波池光纤直放站使用说明书

2.2外部告警接口转换板说明 ·············································································· 20 3监控系统的软件说明 ························································································································ 21 3.1下载软件 ··································································································· 21 3.2操作管理软件（OMT） ··················································································· 21 4直放站设备监控操作流程 ················································································································ 22 5各种类型直放站所具备数据对应关系 ···························································································· 22

附录1 ···················································································································································· 23 附录2 ···················································································································································· 25 附录3 ···················································································································································· 26 附录4 ···················································································································································· 27 附录5 ···················································································································································· 30

GSM900光纤直放站使用说明书 上海欣民通信技术有限公司 第 2 页 地址：上海市邯郸路80号 电话：86-21-65368000 传真：86-21-65368886

GSM900载波池光纤直放站使用说明书

一、 概述

光纤直放站用于蜂窝式移动电话系统，是一种扩大基站覆盖面积的双向射频放大器。它是一种高科技、高效率的服务系统，能够利用光纤设备在低损耗、低干扰的情况下改善通信质量。而无线网络动态配置系统——载波池设备，可通过调整移动蜂窝网的载波资源，提高网络利用率。对提高网络优化工作有着非常重要的意义。

上海欣民的GSM光纤直放站频段可分为890-909/935-954（中国移动GSM900）；885-909/930-954（中国移动EGSM900）；909-915/954-960（中国联通GSM900）。

载波池光纤直放站由近端机和远端机组成。通过本地或远程监控控制开关状态，可以在短时间内将载波资源在基站端和远端之间、或远端1和远端2之间进行载波调度，实现存在一定的话务负相关性的不同类型区域之间的载波资源的调度。近端机放在基站附近，通过与基站耦合将前向信号放大成合适的大小，接着电/光转换器（E/O）把电信号转换成光信号，转换后的光信号通过光纤送到远端机。远端机将输入光信号通过光/电转换器（O/E）转回电信号，再通过功率放大器和增益控制器到达高功放（HPA）。其中HPA是信号放大后发向服务区的最终输出部分。使用双工器的功能是稳定系统以及通过增加上下行链路的隔离度来降低无用频率的影响。设备单独建立远程监控系统，通过短信联系的方式进行远程监控和远程操作，实现定时或远程调度而无须现场操作。

图1 直放站机箱外观图（从左至右为：室外远端机机箱、室内近端机机箱、近端机机箱）

GSM900光纤直放站使用说明书 上海欣民通信技术有限公司 第 3 页 地址：上海市邯郸路80号 电话：86-21-65368000 传真：86-21-65368886

GSM900载波池光纤直放站使用说明书

LD PD FC/APC 48V DC POWER RS232 图2 光纤直放站近端机面板图 MON (30dB) BS GND 本地/远程 POWER MS 虚接口,光纤可从此穿出 FWD-MON 图3 室外光纤直放站远端机机箱面板图 虚接口 GND POWER MS GND FWD-MON 图4 室内光纤直放站远端机机箱面板图 GSM900光纤直放站使用说明书 上海欣民通信技术有限公司 第 4 页 地址：上海市邯郸路80号 电话：86-21-65368000 传真：86-21-65368886

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