数字上下变频FPGA设计的详细介绍资料，还是中文的。很舍不得上传的哦。-FPGA digital down conversion design detailed information, or Chinese. Oh, very reluctant to upload.

这是一个用verilog HDL实现的实现数字下变频的源代码。-This is a verilog HDL used to achieve the realization of digital down conversion of the source code.

在MATLAB2007A/SIMULINK环境下用DSP BUILDER8.0实现了五级CIC，解决了溢出问题。生成了可用的VHDL文件。- DSP BUILDER8.0 A 5 stages CIC filer is realized in MATLAB2007A/SIMULINK by using DSP Builder 8.0.The overflow problem is resulved.Useful VHDL files are generated at last.

中频数字接收机设计与实现 对中频数字接收机方案的可行性作了分析，并通过系统仿真工具SystemView对A／D，数字下变频(DDC)及AM、FM等调制信号的软件解调作了仿真。-Design and implementation of a digital intermediate frequency receiver