Publication de 12 numéros par an
ISSN Imprimer: 0040-2508
ISSN En ligne: 1943-6009
Indexed in
Optimization of Perfect Reconstruction Cosine-Modulated Filter Banks: Fast Algorithm
RÉSUMÉ
This paper presents an efficient algorithm for the design of M-channel cosine-modulated filter banks satisfying perfect reconstruction (PR). It is well known that FIR filter bank satisfying the PR properly can be obtained by cosine modulation of a linear-phase prototype of length N=2mM (where M is the number of channels and m is an arbitrary positive integer) by minimizing of the stop-band energy of this prototype filter. Our algorithm needs only a few iterations to obtain a solution at minimizing procedure requiring approximately m(M/2) parameters to be optimized. Some design examples and comparisons are included.
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Kumar A., Singh G.K., Anand R.S., A simple design method for the cosine-modulated filter banks using weighted constrained least square technique, Journal of the Franklin Institute, 348, 4, 2011. Crossref
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Kumar A., Singh G.K., Anurag S., Design of nearly perfect reconstructed non-uniform filter bank by constrained equiripple FIR technique, Applied Soft Computing, 13, 1, 2013. Crossref