系统容量 ：在保证通信质量的前提下，功率控制算法能够支持的用户数量和数据传输速率。
码片同步 ：指接收端的扩频码与发送端的扩频码在码片时序上的同步。这一过程需要解决码片时序的捕获和跟踪问题，通常采用滑动相关法、匹配滤波法等技术实现。
软切换区： 定义软切换区，确保移动终端在进入新的切换区时能够及时地与新的基站建立连接。
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The network will Management the transmitted ability of the visitors channel to keep the sign quality just sufficient, thus trying to keep the sound level noticed by all other customers into a minimum.
CDMA technological know-how allows multiple customers to share exactly the same frequency band concurrently by assigning a unique code (or channelization code) to every person. This code distinguishes a person consumer's data from another's on exactly the same frequency.
FDMA is useful for voice and data transmission. For the duration of this technique the general channel bandwidth is shared by multiple end users, therefore a range of consumers can transmit their data at the same time. N
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帧同步 ：指将接收的数据序列按照传输时的帧结构正确地划分开来。帧同步一般需要在码片同步的基础上，利用特定的同步序列进行。
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It is the same as 56K modem that is ready to supply a greater velocity of data from the downstream route than in the upstream course. That is the reason why its title is Asymmetric DSL. It divides bandwidth unevenly