基于DDWS的复杂波形信号发生器实现

Implementation of DDWS-Based Complicated Waveform Generators

针对现有信号发生器具有的宽频带复杂波形合成能力弱、建立时间长的问题,提出了一种以软件无线电平台为基础、基于DDWS技术的实现方案。该方案采用高性能DDS单元实现捷变频时钟;采用大容量高速FPGA实现序列合成技术;采用嵌入式处理器实现基于素材波形的合成算法。实验结果表明,该方法波形建立速度较快,并有效提高了信号发生器的复杂波形和任意波形合成能力。

To overcome disadvantages of existing general signal generators, including long setup time and poor synthesizing of wideband complex signals, an implementation method is presented based on software radio and DDWS techniques. High performance DDS units are leveraged to generate fre- quency agile clock signals,large-capacity FPGAs are utilized to implement sequence synthesis, and ARM processors are used to realize the synthesis algorithm based on material waveforms. Experiments indicate that this method can improve complex waveform synthesis and shorten the setup time.