移动通信的发展方向如何是众人关注的热点,从发达国家竞相开发的重点来看,90年代的移动通信将朝着下面4个方向发展: 1.通信规模的扩大化。即利用人造卫星系统转接,建立规模更大的移动通信网。卫星使用宽波束天波,只要少数几 How the development direction of mobile communication is the focus of everyone’s attention, from the developed countries competing focus of development, the 90’s mobile communications will be in the following four directions: 1. The expansion of communications. Namely the use of satellite system transfer, the establishment of a larger mobile communications network. Wide-beam satellite skywaves, as long as a few