Shah, M.A. and Jeoti, V. (2004) Computationally efficient design of NPR paraunitary Cosine Modulated Filter Banks. In: UNSPECIFIED.
Full text not available from this repository.Abstract
A computationally efficient design approach for paraunitary Cosine Modulated Filter Banks (CMFBs) is proposed here. Usually the design methodology entails designing a prototype filter by minimizing stopband energy subject to two sets of perfect reconstruction (PR) conditions. By combining these sets of PR conditions into one using power complementary properties of its polyphase components, we seek to lay them out in such a way as to allow their computation during optimization by referencing the indices of a suitably constructed matrix. We also seek to define a dimensionally energy-like objective function for optimization with the use of a simple penalty number. An iterative Quadratic-Constrained Least-Squares (QCLS) approach is then used to solve the problem. The results show marked improvement over existing methods in that, even for very long prototype filters, the computational complexity is much less and hence, shorter design time © 2004IEEE.
Item Type: | Conference or Workshop Item (UNSPECIFIED) |
---|---|
Additional Information: | cited By 0; Conference of IEEE TENCON 2004 - 2004 IEEE Region 10 Conference: Analog and Digital Techniques in Electrical Engineering ; Conference Date: 21 November 2004 Through 24 November 2004; Conference Code:66073 |
Uncontrolled Keywords: | Computational complexity; Cosine transforms; Digital filters; Least squares approximations; Optimization; Quadratic programming, Cosine modulated filter banks (CMFB); NPR filter banks; Prototype filters; QCLS design, Computational methods |
Depositing User: | Mr Ahmad Suhairi UTP |
Date Deposited: | 09 Nov 2023 15:10 |
Last Modified: | 09 Nov 2023 15:10 |
URI: | https://khub.utp.edu.my/scholars/id/eprint/32 |