Title :
The design of two-channel lattice-structure perfect-reconstruction filter banks using powers-of-two coefficients
Author :
Horng, Bor-Rong ; Samueli, Henry ; Wilson, A.N.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
7/1/1993 12:00:00 AM
Abstract :
An optimization technique is presented for the design of two-channel lattice-structure perfect-reconstruction filter banks with powers-of-two coefficients. The filter coefficients are represented by a canonic signed-digit (CSD) code. The proposed technique requires the original optimal infinite-precision coefficients as the starting point, and searches for the set of CSD coefficients that minimizes the peak stopband ripple. Design examples are given to show that perfect-reconstruction filter banks with good filtering performance can be obtained
Keywords :
digital filters; filtering and prediction theory; optimisation; canonic signed-digit code; filter banks; filter coefficients; lattice-structure; optimal infinite-precision coefficients; optimization technique; peak stopband ripple; perfect-reconstruction; powers-of-two coefficients; two-channel; Channel bank filters; Design optimization; Dynamic range; Filter bank; Filtering; Frequency response; Lattices; Performance gain; Quantization; Signal design;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
