The Cellular Mobile communication is Modern communications mainstream, but this communication systems has much randomicity, estimating this communication systems with the usual method is difficult.
蜂窝移动通信是现代通信的主流，但是这种通信系统的随机性很大，用通常的方法去估计它的通信系统的优劣是十分困难的。
The first generation of mobile communication systems (1g) was analog cellular system for mobile communication standard with the main voice services.
第一代移动通信系统(1g)是模拟制式的蜂窝移动通信系统，主要提供话音服务。
Power control is a key technique in CDMA cellular mobile communication systems. It can combat near far effect, reduce multiple access interference and improve the system capacity.
功率控制技术是CD MA系统克服“远—近效应”，降低多址干扰、增大系统容量的一项关键技术。
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