低时延两通道PR FIR滤波器组的设计

北京邮电大学学报 ›› 2002, Vol. 25 ›› Issue (1): 87-90.

低时延两通道PR FIR滤波器组的设计

李东平,赵尔沅,乐光新

北京邮电大学电信工程学院, 北京 100876

收稿日期:2001-03-16 出版日期:2002-01-10
作者简介: 李东平(1970—) 男,博士生
基金资助:
国家自然科学基金资助项目(69972010)

Design of Two-Band PR FIR Filter Banks with Low Delay

LI Dong-ping, ZHAO Er-yuan, YUE Guang-xin

Telecommunication Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2001-03-16 Online:2002-01-10
Supported by:

摘要/Abstract

摘要： 在两通道提升结构滤波器组的基础上,提出了一种新的低时延两通道完全重建(PR)FIR滤波器组的设计方法。该方法将两个非线性相位函数作为提升函数,并定义误差函数为提升函数理想频率响应与实际频率响应之差。逼近过程采用了实虚部相联合的Chebyshev逼近。

关键词: 数字滤波器, 完全重建, 提升函数

Abstract: Based on the lifting scheme, a new design algorithm is proposed for two-band PR FIR filter banks with low delay.In this new method, the lifting functions are selected as non-linear phase functions and the error is defined as the difference between the ideal frequency response and the actual response of the liting functions. During the design of lifting functions, the jointed approximation between real part and imaginary part is exploited.

Key words: digital filter, perfect reconstruction, lifting function

中图分类号:

TN911.72

李东平,赵尔沅,乐光新. 低时延两通道PR FIR滤波器组的设计[J]. 北京邮电大学学报, 2002, 25(1): 87-90.

LI Dong-ping, ZHAO Er-yuan, YUE Guang-xin. Design of Two-Band PR FIR Filter Banks with Low Delay[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2002, 25(1): 87-90.

[1]	李东平, 赵尔沅, 乐光新. 2L通道复系数FIR仿酉滤波器组的设计[J]. 北京邮电大学学报, 2001, 24(4): 44-47.
[2]	李东平, 赵尔沅, 乐光新. 一种多路复用分析滤波器组的最优求解方法[J]. 北京邮电大学学报, 2001, 24(2): 80-83.