当前位置:网站首页>【FPGA教程案例13】基于vivado核的CIC滤波器设计与实现
【FPGA教程案例13】基于vivado核的CIC滤波器设计与实现
2022-07-07 00:41:00 【fpga和matlab】
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1.软件版本
vivado2019.2
2.本算法理论知识和IP核配置方法
CIC滤波器已经被证明是在高速抽取和插值系统中非常有效的单元,具有结构简单,易于工程实现的特点。CIC滤波器是数据通讯中的常用模块,一般用于数字下变频(DDC)和数字上变频(DUC)系统,随着数据传输率的增加,级联梳状滤波器(CIC)的应用变得尤为重要。CIC滤波器的主要特点是,仅利用加法器、减法器和寄存器(无需乘法器),适合工作在高采样率。
在数字下变频(DDC)中,CIC(级联积分梳状)滤波器起着重要的作用.它主要用于采样速率的抽取,同时具有低通滤波的作用。一般CIC抽取滤波器如下所示:

在本课程中,我们将学习如何通过IP核来实现CIC滤波器。
找到CIC滤波器核,如下图所示:
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