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。
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.
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。
In a digital communication system, usually there exist carrier frequency offset between the sender and the receiver.
在数字通信系统中，发送端和接收端的载波往往存在一定的频差。
The key of digital transmission system lies in carrier synchronization and channel equalization.
数字传输系统的关键在于载波同步和信道均衡。
Finally, the performances of this digital demodulator are tested through the simulation of BER and the system joint lock-time, and a carrier recovery module is implemented in FPGA.
最后，通过对误码性能和系统联合锁定时间进行仿真，验证了数字解调器性能，并在FPGA中实现了载波恢复模块。
A digital communication system is introduced to replace analog system used in underground locomotive carrier communication system.
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。
System, through the tube as the carrier of digital display data and therefore have a user-friendly operation and aesthetic results page.
系统通过数码管为载体显示数据，所以具有人性化的操作和美观的页面效果。
Digital phase lock loop base on fuzzy logical control, which is used to recover carrier in communication system.
基于模糊逻辑控制的数字锁相环，用于通信系统中的载波恢复。
An improved analog-digital mixed system is put forward on the bases of scheme of phase generated carrier (PGC).
分析了相位载波(PGC)技术的模拟数字混合解调方案，提出了一种改进的模拟数字混合系统。
An improved analog-digital mixed system is put forward on the bases of scheme of phase generated carrier (PGC).
分析了相位载波(PGC)技术的模拟数字混合解调方案，提出了一种改进的模拟数字混合系统。
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