An iterative approach to FIR filter design with reduced group delay error via semidefinite programming

2016 ◽  
Author(s):  
Binbin Sun ◽  
Zeru Lu ◽  
Dacai Xu
Keyword(s):  
Semidefinite Programming ◽  
Group Delay ◽  
Filter Design ◽  
Fir Filter ◽  
Iterative Approach ◽  
Reduced Group ◽  
Fir Filter Design

scholarly journals A direct optimization method for low group delay FIR filter design

2013 ◽  
Vol 93 (7) ◽  
pp. 1764-1772 ◽  
Author(s):  
Changzhi Wu ◽  
David Gao ◽  
Kok Lay Teo
Keyword(s):  
Group Delay ◽  
Filter Design ◽  
Optimization Method ◽  
Fir Filter ◽  
Direct Optimization ◽  
Fir Filter Design

scholarly journals Estimation of filter order for prescribed, reduced group delay FIR filter design

2015 ◽  
Vol 63 (1) ◽  
pp. 209-216 ◽  
Author(s):  
J. Konopacki ◽  
K. Mościńska
Keyword(s):  
Group Delay ◽  
Filter Design ◽  
Phase Response ◽  
Fir Filters ◽  
Linear Phase ◽  
Magnitude Response ◽  
Filter Order ◽  
Reduced Group ◽  
Fir Filter Design ◽  
The Given

Abstract FIR filters are often applied, as they possess many advantages, including linear-phase response and well elaborated design methods. However, group delay introduced by FIR filters is usually large. The reduction of group delay can be obtained by restriction of the linear phase requirement only to the passband. One of the problems that appear while designing FIR filters with a prescribed value of group delay is the choice of the filter order. In the paper a formula for filter order calculation for the given filter parameters and dedicated for equiripple or quasi-equiripple approximation of the magnitude response has been derived based on experiments. Numerous examples that explain how to use the derived formula have been included.

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