2009
Two-Degree Vanishing Moments on 2-D Non-separable GenLOT
2009 INTERNATIONAL SYMPOSIUM ON INTELLIGENT SIGNAL PROCESSING AND COMMUNICATION SYSTEMS (ISPACS 2009)
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- First page
- 248
- Last page
- 251
- Language
- English
- Publishing type
- Research paper (international conference proceedings)
- DOI
- 10.1109/ISPACS.2009.5383856
- Publisher
- IEEE
This paper proposes a novel design method of two-dimensional (2-D) non-separable linear-phase paraunitary filter banks (LPPUFB). The two-degree vanishing moment constraint is derived for the lattice structure. In the 2 x 2-decomposition case, the authors have already derived the constraint and designed non-separable symmetric orthonormal wavelets with two-degree vanishing moments. This work extends the discussion to more general 2m(y) x 2m(x)-decomposition case and yields a method to impose the condition to the lattice structure. The constraint is imposed directly on design parameters so that both of the linear-phase and paraunitary property are structurally guaranteed. It is shown that the two-degree vanishing moment constraint reduces the number of parameters to be freely chosen and gives a smooth lowpass filter. Several design examples are shown to verify the significance of the novel constraint on the lattice structure.
- Link information
- ID information
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- DOI : 10.1109/ISPACS.2009.5383856
- Web of Science ID : WOS:000289915800062