Name
Title | ||
|---|---|---|
Implementation of linear-phase FIR nearly perfect reconstruction cosine-modulated filterbanks utilizing the coefficient symmetry |
Abstract | ||
|---|---|---|
The analysis and synthesis parts of a cosine-modulated M-channel filterbank (FB) contain two sections, a modulation block and a prototype filter implemented in a polyphase structure. Although, in many cases, a linear-phase prototype filter is used, the coefficient symmetry of this filter is not utilized when using the existing polyphase structure. In this paper, a method is proposed for implementing a linear-phase prototype filter building a nearly perfect reconstruction cosine-modulated FB in such a way that it enables one to partially utilize the coefficient symmetry, thereby reducing the number of required multiplications in the implementation. The proposed method can be applied for implementing FBs with an arbitrary filter order and number of channels. Moreover, it is shown that, in all cases under consideration, the cosine-modulation part of the FB can be implemented by using a fast discrete cosine transform. The efficiency of the proposed implementation is evaluated by means of examples. |
Year | DOI | Venue |
|---|---|---|
2010 | 10.1109/TCSI.2009.2015599 | IEEE Trans. on Circuits and Systems |
Keywords | Field | DocType |
coefficient symmetry,fast discrete cosine,cosine-modulated filterbanks,proposed implementation,linear-phase prototype filter,cosine-modulation part,linear-phase fir,polyphase structure,existing polyphase structure,cosine-modulated m-channel filterbank,perfect reconstruction,arbitrary filter order,prototypes,transfer functions,adaptive signal processing,fir filters,linear phase,discrete cosine transform,signal processing,fir filter,noise reduction,finite impulse response filter | Linear phase,Polyphase system,Control theory,Prototype filter,Filter bank,Discrete cosine transform,Electronic engineering,Adaptive filter,Finite impulse response,Mathematics,Filter design | Journal |
Volume | Issue | ISSN |
57 | 1 | 1549-8328 |
Citations | PageRank | References |
0 | 0.34 | 12 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Robert Bregovic | 1 | 148 | 18.84 |
| Ya Jun Yu | 2 | 385 | 36.46 |
| Ari Viholainen | 3 | 145 | 12.23 |
| Yong Ching Lim | 4 | 424 | 77.44 |