DocumentCode :
292930
Title :
Design and implementation of cosine-modulated 2 dimensional perfect reconstruction FIR filter banks
Author :
Ikehara, Masaaki
Author_Institution :
Fac. of Sci. & Technol., Keio Univ., Yokohama, Japan
Volume :
2
fYear :
1994
fDate :
30 May-2 Jun 1994
Firstpage :
77
Abstract :
It is well known that FIR filter banks, satisfying the perfect reconstruction (PR) property, can be obtained by cosine modulation of linear-phase prototype FIR digital filter. In this paper, it is shown to be possible to design 2-dimensional (2-D) PR filter banks using cosine modulation as for the 1-D case. At first, the author designs a 2-D digital filter with half passband obtained by the sampling matrix. Next, 2-D analysis filter banks are realized by cosine-modulating this prototype 2-D digital filter. It is shown that the modulation in 2-D frequency plane is equivalent to the 1-D modulation. A necessary and sufficient condition for 2-D perfect reconstruction filter banks is derived. Furthermore the author formulates the design method as a quadratic-constrained least-square minimization problem
Keywords :
Design methodology; Digital filters; Digital modulation; Filter bank; Finite impulse response filter; Frequency modulation; Passband; Prototypes; Sampling methods; Sufficient conditions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-1915-X
Type :
conf
DOI :
10.1109/ISCAS.1994.408909
Filename :
408909
Link To Document :
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