Browsing by Author "Khoo, I. H."

Now showing 1 - 3 of 3

New 2-D Filter Architectures with Quadrantal Symmetry and Octagonal Symmetry and Their Error Analysis
(2017-01-01)
Chen, Pei-Yu
;
Van, Lan-Da
;
Reddy, Hari C.
;
Khoo, I. H.
;
資訊工程學系
In this paper, two new two-dimensional (2-D) IIR and FIR filter architectures possessing quadrantal and octagonal symmetries are proposed. Furthermore, the theoretical error analysis for the proposed filters is also presented. Utilizing the presented error analysis, user can decide the bit width of the filters with satisfactory error tolerance.
New 2-D Quadrantal- and Diagonal-Symmetry Filter Architectures Using Delta Operator
(2017-01-01)
Chen, Pei-Yu
;
Van, Lan-Da
;
Khoo, I. H.
;
Reddy, Hari C.
;
資訊工程學系
In this paper, we propose two new two-dimensional (2-D) IIR filter architectures with quadrantal and diagonal magnitude symmetry using delta operator. These filter architectures can attain lower coefficient sensitivity in comparison with the traditional shift operator formulation (i.e., the conventional z-domain filters). The IIR filter structures presented not only achieve lower coefficient sensitivity without sacrificing the number of multipliers, but in fact reducing the number of multipliers by 36.36% compared with the previous corresponding quadrantal symmetry filter structures using delta operator with order N=3.
Type-3 2-D Multimode IIR Filter Architecture and the Corresponding Symmetry Filter's Error Analysis
(2017-01-01)
Chen, Pei-Yu
;
Lan-Da Van
;
Reddy, Hari C.
;
Khoo, I. H.
;
資訊工程學系
In this paper, we propose a low-cost high-speed Type-3 two-dimensional (2-D) multimode symmetry IIR filter architecture including four different operation modes: diagonal symmetry mode (DSM), fourfold rotational symmetry mode (FRSM), quadrantal symmetry mode (QSM), and octagonal symmetry mode (OSM). For multimode purpose, the Type-3 transfer function is applied and the interconnections to achieve corresponding four symmetry filter architectures are proposed. The proposed 2-D IIR filter structure has lower number of adders and shorter critical path than the published Type-1 IIR filter structure without sacrificing multipliers. Furthermore, the theoretical error analysis of 2-D IIR filter architectures with diagonal symmetry and four-fold rotational symmetry is studied.