数字载波系统(digital carrier system)用于数字信号的载波系统，采用再生转发器和时分复用.这里载波含义不同于模拟载波，它是时分多路复用数字通信系统与模拟系统(一般...
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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。
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.
通过数字仿真，比较了交流载波系统和其等效直流系统，验证了交流载波系统等效直流方法的可行性。
By digital simulation, the Ac carried wave system and its equivalent Dc system are checked and the feasibility of Dc method equivalent to the Ac carrier wave system is verified.
提出了在架线电机车载波通信系统中，用数字通信取代模拟通信方式。
A digital communication system is introduced to replace analog system used in underground locomotive carrier communication system.
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