Design of 2-D FIR narrow transition band filters by double transformations using GA approach |
| |
Authors: | Kuo-Hsien Yeh Shian-Tang Tzeng |
| |
Affiliation: | (1) Department of Computer Science and Information Engineering, Leader University, No. 188 Sec. 5, An-Chung Road, Tainan, 709, Taiwan;(2) Department of Electronic Engineering, Kao Yuan University, No. 1821 Chungshan Road, Luchu Kaohsiung, 821, Taiwan |
| |
Abstract: | In this investigation, subfilters are cascaded in the design of a 2-D narrow transition band FIR digital filter with double
transformations, a transformation from wide transition band subfilter into 1-D narrow transition band filter and a McClellan
transformation from 1-D filter into 2-D filter. The traditional method for designing a 2-D FIR digital filter with a narrow
transition band yields very high orders. The difficulty of the design and implementation will increase with orders exponentially.
Numerous identical low-order subfilters are cascaded together to simplify the design of a high-order 2-D filter compared to
traditional design method. A powerful genetic algorithm (GA) is presented to determine the best coefficients of the McClellan
transformation. It can be used to design any contours of arbitrary shape for mapping 1-D to 2-D FIR filters very effectively.
A generalized McClellan transformation is presented, and can be used to design 2-D complex FIR filters. Various numerical
design examples are presented to demonstrate the usefulness and effectiveness of the presented approach.
|
| |
Keywords: | Subfilters Double transformations McClellan transformation GA approach |
本文献已被 SpringerLink 等数据库收录! |
|