文档介绍：基于 FPGA 的数字滤波器的设计 Graduation Design(Thesis) of Chongqing University D esign ofD igital F ilter Based on FPGA Undergraduate: Huang Jianhua Supervisor: Yang Lisheng Major: Electronic Information Engineering College munication Engineering Chongqing University June 2013 重庆大学本科学生毕业设计(论文)中文摘要 I 摘要数字信号处理在通信、雷达、声纳等中有着广泛的应用。数字滤波器的设计是数字信号处理的关键技术之一,有着十分重要的理论和实际意义。随着数字技术的不断发展,在许多场合,数字滤波器正在快速取代模拟滤波器。 FPG A(现场可编程门阵列)在现代数字电路设计中发挥着越来越重要的作用。从设计简单的接口电路到设计复杂的状态机, FPGA 所扮演的角色已经不容忽视。本论文完成了基于 FPGA 的 FIR 和 IIR 数字滤波器的设计与实现。本论文首先理论分析讨论了数字滤波器的设计方法,并使用 MATLAB 工具验证采用哪种窗函数来设计 FIR 数字滤波器, 使用哪种模拟滤波器原型映射 IIR 数字滤波器。然后根据模拟滤波器的技术指标来确定数字滤波器的技术指标,在 MATLAB 环境下按照数字滤波器的技术指标设计数字滤波器,并得到滤波器系数,编程实现系数量化,并且比较分析量化前后系统响应的差异,由此得到合适的量化等级。然后在 ISE 软件平台下根据 MATLAB 工具得到的量化系数,使用 VHDL 语言进行 FIR 和 IIR 滤波器算法模块编程,同时对 AMP 电路(可编程预放大器)模块、 AD 电路(模拟到数字转换器)模块和 DA 电路(数字到模拟转换器)模块分别进行编程配置,并且对各模块进行严格的软件仿真验证,其中 AMP 电路模块、 AD 电路模块和 DA 电路模块必须进行硬件验证。最后将所有软件和硬件验证无误的模块整合,下载到 FPGA 硬件中,进行功能验证。验证结果符合设计要求。关键词: FIR 滤波器, IIR 滤波器, MATLAB , FPGA , VHDL 重庆大学本科学生毕业设计(论文) ABSTRACT II ABSTRACT Digital signal processing has been widely used munications, radar, sonar and many other fields. The design of digital filter isone of the key technologies of digital signal processing, which has a very important theoretical and practical significance. As digital technology continues to develop, on many occasions, the digital filter is rapidly replacing analog filters. FPGA (field - programmable gate array) in modern digital circuit design is playing an increasingly important role. From the design simple interface circuit to the design of plex state machine, FPGA's role has not been to ignore. T his thesis plishe sa FPGA-based FIR and IIR digital filter design and implementation. T his thesis first theoretically analyse s the method ofd igital filter design ,with MATLAB tool verifying which window function is suitable for the FIR digital filter design , which analog filter prototype map s IIR digital filter .And according to the technical specifications of the analog