Title :
Biorthogonal cosine-modulated filter bank
Author :
Nguyen, Truong Q. ; Heller, Peter N.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
Abstract :
Cosine-modulated filter banks have been studied extensively because of their design ease and efficient implementation. These filter banks either have restricted lengths or assume the paraunitary property for the polyphase matrices. In this paper, the biorthogonal cosine-modulated filter bank with arbitrary length is considered and the perfect reconstruction (PR) conditions are derived. These conditions are the general form of the PR conditions reported in the literature. Examples of PR systems with variable overall delay are designed using the quadratic constrained least squares formulation
Keywords :
delays; digital filters; least squares approximations; matrix algebra; modulation; signal reconstruction; PR conditions; QCLS formulation; biorthogonal cosine-modulated filter bank; delay; design; implementation; paraunitary property; perfect reconstruction conditions; polyphase matrices; quadratic constrained least squares; Cost function; Delay systems; Equations; Filter bank; Prototypes; Quantum cascade lasers; Sufficient conditions;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3192-3
DOI :
10.1109/ICASSP.1996.543940
