【摘要】 在数字电视技术中,诸如通讯、视频图像和音频信号处理等系统中都要求对信号处理要有实时性和灵活性,随着可编程逻辑器件和EDA技术的发展,FPGA在这些方面的优势都突显出来了,基于FPGA的信号处理器已广泛应用于各种信号处理领域。数字滤波器是现代数字信号处理系统的重要组成部分之一。IIR数字滤波器又是其中非常重要的一类滤波器,因其较低的阶次可以获得较高的频率选择特性而得到广泛应用。更多还原

【Abstract】 Modern electrical system and digital television technology,including communication message,image processing,video and audio frequency signal processing systems,requires real-time and flexible processing of the signals.With the development of PLD device and EDA technology and the superiority of FPGA,the signal processing fields.Digital filter is one of the important components for digital signal processing system,and IIR digital filter is widely applied in modern signal processing systems for its good characteristic of frequency selection.This paper presents the design and realization of IIR filter based on FPGA.It first describes the application of IIR filter in digital television technology,then gives the elementary knowledge of FPGA and its design method,then according to the characteristic of basic framework of IIR filters,discusses the design of IIR filter based on FPGA.Finally,the design is implemented and simulated on platform of Xilinx’s ISE and Modelsim software.更多还原