Title :
A low-complexity method for the design of low-delay cosine-modulated filter banks
Author_Institution :
Coll. of Math. Sci., Chongqing Normal Univ., Chongqing, China
Abstract :
We present a new method for the design of the cosine-modulated filter bank with low complexity and low delay. The design of such a filter bank is formulated as a nonconvex optimization problem with equality constraints. An iterative scheme is developed to solve this optimization problem. To illustrate the effectiveness of the proposed method, a numerical example is presented. Comparing our method with that in [14], our approach can reduce the number of filter taps by up to 40 % while maintaining a relatively low delay.
Keywords :
concave programming; delay filters; iterative methods; iterative scheme; low complexity method; low delay cosine modulated filter bank design; nonconvex optimization problem; optimization problem; Attenuation; Constraint optimization; Delay; Design methodology; Design optimization; Filter bank; Image reconstruction; Nonlinear filters; Prototypes; Signal design;
Conference_Titel :
Green Circuits and Systems (ICGCS), 2010 International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-6876-8
Electronic_ISBN :
978-1-4244-6877-5
DOI :
10.1109/ICGCS.2010.5543093