Title :
On the subband orthogonality of cosine-modulated filter banks
Author :
Lee, Kong A. ; Gan, Woon S.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
The second-order characteristics of cosine-modulated filter banks are formulated and analyzed. We show that the outputs of a cosine-modulated filter bank are always properly phase-aligned in such a way that they are orthogonal at zero lag for arbitrary types of input signal. These subband-orthogonality properties are desirable in improving the efficiency and effectiveness of signal processing algorithms.
Keywords :
channel bank filters; signal processing; cosine-modulated filter banks; signal processing algorithms; subband orthogonality; Channel bank filters; Equations; Filter bank; Finite impulse response filter; Frequency; Gallium nitride; Prototypes; Random variables; Signal analysis; Signal processing algorithms;
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2005. ISPACS 2005. Proceedings of 2005 International Symposium on
Print_ISBN :
0-7803-9266-3
DOI :
10.1109/ISPACS.2005.1595501
