Approximation of IIR filters with equivalent fir filters in magnitude and group delay responses

被引：2

作者：

Rizvandi, Nikzad Bobaii ^{[1
]}

Ranjbar, Mohammad R. Nezami ^{[1
]}

nejad, Mahmood Mousavi ^{[1
]}

机构：

[1] Iran Telecommun Res Ctr ITRC, Multimedia Grp, Dept Informat Technol, Tehran 14399, Iran

来源：

PROCEEDINGS OF THE 2007 15TH INTERNATIONAL CONFERENCE ON DIGITAL SIGNAL PROCESSING | 2007年

关键词：

replacement IIR filters with FIR filters; mean least square error approximation; magnitude and group delay;

D O I：

10.1109/ICDSP.2007.4288575

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

This paper presents a new method to approximate art IIR filter with a FIR filter so that the obtained FIR filter has the same Magnitude and group delay as the original IIR filter. This method is formulate as minimization of an error transfer function between the given IIR filter and the desired FIR filter which is designed using the mean least square error(MLSE) technique. Analyzing of this method shows that this method converges to an accurate approximation when places of the IIR filter poles in Z-plane are in an elliptic with radiuses equal to 0.4 and 0.14 in imaginary and real axis, respectively. Several examples are presented in order to show this method efficiency.

引用

页码：288 / +

页数：3

共 50 条

[31] EFFICIENT IIR AND FIR FAN FILTERS
ANSARI, R
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS, 1987, 34 (08): : 941 - 945
[32] THE DESIGN OF FIR AND IIR FILTERS WHICH ARE EQUIVALENT TO A LEAST-SQUARES PROCESS
HOLTZ, H
CAMPBELL, BJ
IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1993, 41 (02) : 939 - 942
[33] Optimal design and parallel implementation of FIR filters with variable magnitude and fractional-delay responses
Deng, TB
2002 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL I, PROCEEDINGS, 2002, : 401 - 404
[34] Lowpass delay filters with flat magnitude and group delay constraints
Gopinath, RA
IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2003, 51 (01) : 182 - 192
[35] Magnitude approximation of digital filters with specified degrees of flatness and constant group delay characteristics
Hegde, R
Shenoi, BA
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING, 1998, 45 (11): : 1476 - 1486
[36] AN EFFICIENT METHOD OF GROUP DELAY EQUALIZATION FOR DIGITAL IIR FILTERS
Okoniewski, Piotr
Piskorowski, Jacek
METROLOGY AND MEASUREMENT SYSTEMS, 2013, 20 (03) : 395 - 406
[37] IIR approximation of FIR filters via discrete-time vector fitting
Wong, Ngai
Lei, Chi-Un
IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2008, 56 (03) : 1296 - 1302
[38] An analytical approach to the group delay compensation of digital IIR filters
Okoniewski, Piotr
Piskorowski, Jacek
2012 17TH INTERNATIONAL CONFERENCE ON METHODS AND MODELS IN AUTOMATION AND ROBOTICS (MMAR), 2012, : 75 - 78
[39] Design of WLS FIR filters with group delay constraint
Liu, Yongzhi
Lin, Zhiping
2007 6TH INTERNATIONAL CONFERENCE ON INFORMATION, COMMUNICATIONS & SIGNAL PROCESSING, VOLS 1-4, 2007, : 504 - 507
[40] Design of FIR Nyquist filters with low group delay
Xi, Z
Yoshikawa, T
IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1999, 47 (05) : 1454 - 1458

← 1 2 3 4 5 →