Complexity evaluation of conjugate quadrature mirror filter banks

Author

Caini, Carlo ; Salmi, P. ; Vanelli-Coralli, Alessaizdro

Author_Institution

Dept. of Electron., Comput. Sci. & Syst., Bologna Univ., Italy

Volume

1

fYear

1999

fDate

1999

Firstpage

361

Abstract

The aim of this paper is to assess the complexity of different implementations of CQF (Conjugate Quadrature Mirror Filters) analysis and synthesis filter banks. In particular, we compare the classical structure based on FIR (Finite Impulse Response) filters with the alternative implementation based on binomial filters. In both cases, we describe how it is possible to reduce complexity exploiting some inherent redundancies in the analysis or synthesis filter bank. Results show that, with respect to the FIR usual scheme, a complexity reduction of at least a factor 4 is achievable by a joint use of binomial filters and “smart” structures

Keywords

FIR filters; circuit complexity; filtering theory; quadrature mirror filters; redundancy; FIR filters; analysis filter banks; binomial filters; classical structure; complexity evaluation; complexity reduction; conjugate QMF banks; quadrature mirror filter banks; redundancies; smart structures; synthesis filter banks; Channel bank filters; Computer science; Digital filters; Filter bank; Finite impulse response filter; Mirrors; Signal processing; Signal synthesis; Source coding; Video signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on

Conference_Location

Pafos

Print_ISBN

0-7803-5682-9

Type

conf

DOI

10.1109/ICECS.1999.812297

Filename

812297