基于FPGA的自适应滤波器的设计.doc

I 摘要自适应滤波器是统计信号处理的一个重要组成部分。在现代滤波处理技术中,自适应滤波器的处理效果尤为突出。在众多滤波器中, 特别是在一些对信号处理的实时性要求比较高, 体积功耗有严格限制的场合, 使用 FPGA 硬件实现的数字滤波器更为广泛。本论文从自适应滤波器研究的重要意义入手,介绍了线性自适应滤波器的算法, 对几种基于最小均方误差准则或最小平方误差准则的自适应滤波器算法进行研究,就滤波器的基本原理及设计方法做了简单的介绍, 最终设计基于 FPGA 的 LMS 算法设计复数自适应滤波器,对设计方法进行叙述, 并以 VHDL 语言编写程序进行仿真测试。关键词: 自适应滤波器; FPGA ; 自适应算法 LMS ;有限冲激响应滤波器 II FPGA-based design of adaptive filter Student: TAN xx Teacher: CHEN xx Abstract : Adaptive filter isa statistical signal processing as an ponent. Processing technology in the modern filter, the adaptive filter, particularly in the treatment effect. Among the filters, especially in some of the real-time signal processing requirements of higher power, there are strict restrictions on the size of the occasion, the use of FPGA hardware to achieve a wider range of digital filters. In this paper, adaptive filter from the importance of research to start to introduce the linear adaptive filter algorithm, based on several criteria MMSE or least square error criteria for the study of adaptive filter algorithm, it filters The basic principle and design method ofa brief introduction, the final design of FPGA-based design plex LMS adaptive filter algorithm, the design methods described, and VHDL languages in maxplus simulation test platform. Keywords: a daptive filter ; FPGA ; LMS adaptive algorithm ; f inite i mpulse r esponse f ilter III 目录摘要......................................................................................................................................... I 1 绪论........................................................................................................................................ 1 引言............................................................................................................................ 1 2 自适应算法研究及分析....................................................................................................... 1 自适应滤波基本概念...................................................................................