特殊突发还可以承载物理层控制符号如用于内环功率控制的TPC符号。
The Special Burst may also carry layer 1 control symbols such as TPC bits for the purposes of inner-loop power control.
SCDMA系统的闭环功率控制可以分为外环功控和内环功控。
For TD-SCDMA system, the closed-loop power control(PC)consists of inner-loop PC and outer-loop PC.
提出了采用滑模变结构电流内环与由PI调节器和数字低通滤波器组成的电压外环相结合的控制系统，以实现高性能高速度的功率因数校正。
This PFC was realized by employing sliding-mode variable-structure inner current loop control and outer voltage loop PI control with digital low-pass filter to achieve high performance.
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