The paper chiefly introduces the principle of all-digital modulation in IF. The key issue of how to design a all-digitalmodulator is emphasized.
介绍中频全数字调制技术的原理，重点讨论设计全数字调制器的关键问题。
2
This paper designed a full digitalmodulator and a full digital demodulator for the millimeter wave communication machine based on the soft radio theory.
本文利用软件无线电的思想为毫米波保密通信机设计了一个全数字的调制解调器。
3
In this paper a method of designing and implementing Field Programmable Gate Array (FPGA) digitalmodulator based on the improved Direct digital Synthesizer (DDS) technology is presented.