一类自适应IR滤波器的统一模型及性能分析  

Unified Model and Analysis of a Class of Adaptive IIR Filters

作　　者：鲁子奕[1] 杨绿溪[1] 何振亚[1] 

机构地区：[1]东南大学

出　　处：《应用科学学报》1998年第3期262-268,共7页Journal of Applied Sciences

摘　　要：从矢量空间基函数的角度阐述了具有限制反馈的自适应ＩＲ滤波器——Ｌａｇｕｅｒｅ滤波器和Ｇａｍｍａ滤波器，提出了这类滤波器的统一模型．在此基础上，对其性能作了较为详细的分析与比较，指出一般意义上Ｇａｍｍａ滤波器性能好于Ｌａｇｕｅｒｒｅ滤波器，导出了具有限制反馈的自适应ＩＩＲ滤波器的Ｗｉｅｎｅｒ－Ｈｏｐｆ方程及其相应的ＬＭＳ算法，并给出了仿真结果．We present a new approach using vector space base functions to discuss the adaptive IIR filter with restricted feedback——Gamma filter and Laguerre filter, and propose a unified model for them. We analyze and compare this class of filters in detail, showing that Gamma filter has advantages over Laguerre filter. We also derive the Wiener Hopf equation and the corresponding LMS algorithm of them. Some simulation results are also presented.

关 键 词：矢量空间 自适应滤波器 ⅡR滤波器 

分 类 号：TN713[电子电信—电路与系统]