The former realizes steady transmission of signal by testing and analysing the carrier channel's frequency characteristic .
前者是通过对载波信道的频率特性时变性测试、分析，实现信号平稳传输。
2
In the model communications system, the modulation process also is loaded the digital signal in the carrier scope value, the carrier frequency or on the carrier phase.
在典型的通信系统中，调制过程是数字信号加载在载波的幅度值、载波的频率或者载波的相位上。
3
The small signal analysis of laser diode type all optical wavelength converter is presented using carrier depletion, and the frequency response function is given.