Theory and design of arbitrary-length biorthogonal cosine-modulated filter banks
Y. Luo, S. C. Chan, K.L. Ho · 2002
The design and generalization of Perfect-Reconstruction (PR) cosine-modulated filter banks (CMFB) have been studied extensively due to its low design and implementation complexity. In this paper, the theory and design of arbitrary-length biorthogonal CMFB is considered. This is a generalization of the method for designing arbitrary length orthogonal CMFB and has the advantage of simple design procedure. We also propose a systematic design method so that biorthogonal CMFB with longer length can be obtained.