Title :
Cosine-modulated FIR filter banks with linear phase and paraunitary properties
Author :
Gao, X.Q. ; Wang, X.D. ; He, Z.Y.
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing, China
fDate :
4/11/1996 12:00:00 AM
Abstract :
A new class of cosine-modulated FIR filter banks is proposed. The necessary and sufficient condition is given which ensures that the filter banks satisfy the paraunitary and linear phase properties simultaneously. The prototype filter can be designed by optimising its stopband energy on the two-channel lattice parameters, and the filter banks can be implemented efficiently using DCT and DST
Keywords :
FIR filters; digital filters; discrete cosine transforms; filtering theory; DCT; DST; FIR filter banks; cosine-modulated FIR filter; linear phase; paraunitary properties; two-channel lattice parameters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960497
