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随着信息多样化和高密度化的迅速增长,原来主要采用400MHz频带的小容量电路己处于饱和状态,为此分配新的2GHz频带取而代之。2GHz频带时分多向复用无线设备是为了满足这种需要研制的,每个无线波道传输容量最大为48路,对于每个主控局,子局数最多可达8个。主要特点如下:1.采用时间分割通信方式,可以任意改变传输容量并作数字中继,这对小容量电路是很有利的。2.将2GHz频带微波电路基本集成化,可以得到设备的高可靠性及小型化。现将已投入使用的本设备系统概要及实验特性作一介绍。
With the rapid growth of information diversification and densification, the original small-capacity circuits that mainly use the 400 MHz band are already saturated, and a new 2 GHz band is allocated instead. The 2GHz frequency band time-division multiplexed wireless equipment is developed to meet this need. Each radio channel has a maximum transmission capacity of 48 channels. For each master station, the number of sub-offices can be up to eight. The main features are as follows: 1. Using time-division communication, you can change the transmission capacity and digital relay, which is very beneficial for small-capacity circuits. 2 microwave frequency band 2GHz basic integrated circuit, you can get the high reliability of the device and miniaturization. Now put into use the device system overview and experimental features for an introduction.