无线直放站是从空间接收信号,势必要求空间信号尽可能纯净;而在基站较为密集区域,分离不同基站或扇区信号的难度将大大增加,容易使直放站增加对基站干扰。所以在基站较为密集区域,建议尽量采用有线信号的引入方式,比如光纤直放站。在不具备使用光纤直放站条件的场所,只能采用无线直放站,但其施主天线必须具有足够的方向选择性。
提出了一种实用的应用于现有无线通信直放站的具有频谱检测、自激检测和隔离度测试功能的单元设计方案。
This paper proposes a practical plan for a unit with functions of spectrum monitoring, self-excitation detection and isolation degree test, which is suitable for current wireless relay station.
直放站监控系统主要采用短消息传递数据,是无线远程监控系统的典型案例。
Repeater monitoring and controlling system USES Short Message as the main data transport technique, it is a typical case of wireless widespread monitoring and controlling system.
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