Title :
A design technique for 2-D linear-phase frequency-sampling filters with fourfold symmetry
Author :
Stubberud, Peter A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nevada Univ., Las Vegas, NV, USA
fDate :
9/1/1999 12:00:00 AM
Abstract :
A two-dimensional (2-D) frequency-sampling filter approximates a desired frequency response by interpolating a frequency response through set frequency samples which are samples taken from the filter´s frequency response. In this brief, a technique for designing 2-D Type 1-1, Type 1-2, Type 2-1, and Type 2-2 frequency-sampling filters that have real impulse responses, linear phase, and fourfold symmetry is developed that controls interpolation errors and approximates a desired frequency response by minimizing a weighted mean-square error over the passbands and stopbands subject to constraints on the filter´s amplitude response
Keywords :
frequency response; interpolation; linear phase filters; mean square error methods; network synthesis; signal sampling; symmetry; two-dimensional digital filters; amplitude response; design; frequency response; impulse response; interpolation; mean square error; symmetry; two-dimensional linear-phase frequency-sampling filter; Circuits; Digital filters; Error correction; Finite impulse response filter; Frequency response; Interpolation; Multidimensional systems; Nonlinear filters; Passband; Two dimensional displays;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
