DSP完成的实时信号模拟器

基于DSP设计了一种可编程实时信号模拟器。该模拟器包括USB、模拟、数字、用户自定义接口。其中USB接口可以方便地和PC机进行通信，模拟、数字和用户接口输出模拟器产生的模拟和数字信号。DSP是模拟器的核心器件，对数据进行处理，和各部分的管理。FPGA完成DAC等器件的时序及接口控制等。本模拟器提供在线升级功能，用户经USB接口可对板上的FPGA和DSP程序进行升级。另外，FPGA编程可产生用户需要的各种接口信号。这样便于和其他模块进行连接，扩大了适用范围。DSP编程可以产生用户需要的波形。该模拟器在数据通信系统等领域，具有一定的实用意义。

A Real-Time Signal Simulator by DSP

This paper introduces a programmable real-time simulator using DSP and FPGA. It has USB interface, Can link with PC. The simulator includes analogy, digital, and user-define interface which can link with other user's module . DSP is the core of the simulator, charges the management of the simulator and processing data. FPGA implements code and decode, controlling DAC and interface, and so on. Users update the code of the DSP and FPGA by USB. FPGA can produce signals for user to extend the using field of this simulator. DSP can produce various waveforms for user program, so it can be used for some standard transmitter (such as 802.15.4) . The simulator is very useful in mid-low-data rate communication.