Title :
Design of linear phase paraunitary filter banks with suboptimal coding gain without nonlinear optimization
Author :
Ikehara, M. ; Nguyen, Q.
Author_Institution :
Dept. of Sci. & Technol., Keio Univ., Yokohama, Japan
fDate :
31 May-3 Jun 1998
Abstract :
First, we design a low-pass filter with some regularities and then M/2-1 highpass and bandpass filters are designed such that each filter has minimum compaction gain. The cost function which consists of the frequency constraint, orthogonal condition and the variance of output signal is expressed in quadratic form of the filter coefficients. Consequently, the cost function can be minimized by solving linear equations iteratively without using nonlinear optimization
Keywords :
band-pass filters; delay circuits; digital filters; high-pass filters; low-pass filters; bandpass filters; compaction gain; cost function; filter coefficients; frequency constraint; highpass filters; linear equations; linear phase paraunitary filter banks; low-pass filter; orthogonal condition; output signal; quadratic form; suboptimal coding gain; Band pass filters; Channel bank filters; Compaction; Design methodology; Design optimization; Filter bank; Finite impulse response filter; Frequency; Image coding; Lattices;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.694424
