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国外电信新产品无线网络系统ＡＤＣＴｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ公司推出了三种无线网络系统方案。一为城市扇形多扇区数字微元系统，用于扩展已经使用的三扇区微元系统的能力。这种系统能够通过使用一束单模光纤多路复用和传输多种业务，诸如蜂窝、室内专用蜂窝...
ADCTelecommunications, a wireless network system for new products from foreign telecom companies, introduced three wireless network system solutions. One is a city sector multi-sector digital micro-system for expanding the capabilities of the three-sector micro-system already in use. Such a system can multiplex and transmit multiple services by using a single-mode optical fiber such as a cellular ...