基于FPGA与DSP的数字下变频技术实现

本文通过FPGA器件与DSP器件协同工作的模式来实现数字下变频（DDC），完成了工程实现，给出了在特定输入信号下的DDC输出结果。在设计初期阶段，利用Matlab设计系统整体方案并完成模块划分，还对模块建模及优化。FPGA器件采用Xilinx公司Spartan-3ADSP系列的XC3SD3400A，而DSP器件则采用TI公司的TMS320C6416T。

Implementation of Digital Down Conversion Technique Based on FPGA and DSP

The paper introduces a way to implement DDC （Digital Down Conversion）by means of the cooperative work of FPGA and DSP devices. The engineering implementation has been completed, and the DDC output results for some specific input signals have been given. In the initial stage of the design, the author uses Matlah to design the systems solutions, implement the module partition, and also realize the modeling and optimizing for the modules. The FPGA device is XC3SD3400A in Spartan-3A DSP series of Xilinx, while the DSP device is TMS320C6416T of TI.