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CDMA移动通信系统是一个自干扰系统,小区中所有移动用户享用共同的带宽和频率。用户之间的干扰直接关系到整个网络的容量和信号覆盖,也会影响到系统的通话质量。文章首先从解决这一问题着手,论述了应对以上问题的办法,既在系统中采用关键技术--功率控制,然后重点解析了控制网络中用户终端(MS)与基站(BS)发射功率的过程、原理。
A CDMA mobile communication system is a self-interfering system where all mobile users in a cell enjoy a common bandwidth and frequency. The interference between users is directly related to the entire network capacity and signal coverage, will also affect the quality of the system call. The article starts with the solution of this problem and discusses the ways to deal with the above problems. It not only adopts the key technology-power control in the system, but also focuses on the process of controlling the transmit power of user terminal (MS) and base station (BS) in the network ,principle.