Title :
An analysis of coefficient inaccuracy for 2-D FIR direct form digital filters
Author_Institution :
Centre Commun d´´Etudes de Telediffusion & Telecommun., Cesson-Sevigne, France
fDate :
10/1/1990 12:00:00 AM
Abstract :
Filter frequency errors due to coefficient quantization in direct-form realization of zero-phase two-dimensional finite impulse-response (2-D FIR) digital filters are analyzed. Applying a previously published method for 1-D FIR digital filters, the case of 2-D FIR filters with octagonal or quadrantal symmetry is considered. Based on the analysis, statistical bounds on the frequency-response errors and on the wordlength of the filter coefficients are developed and verified by experimental data
Keywords :
errors; filtering and prediction theory; frequency response; two-dimensional digital filters; 2D filters; FIR digital filters; coefficient inaccuracy; coefficient quantization; direct form; direct-form realization; filter coefficients; frequency errors; frequency-response errors; octagonal symmetry; quadrantal symmetry; statistical bounds; two-dimensional finite impulse-response; wordlength; zero-phase; Active filters; Bandwidth; Capacitance; Circuits and systems; Delay effects; Digital filters; Finite impulse response filter; Operational amplifiers; Passband; Statistics;
Journal_Title :
Circuits and Systems, IEEE Transactions on
