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The design of two-channel lattice-structure perfect-reconstruction filter banks using powers-of-two coefficients

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3 Author(s)
Horng, B.-R. ; Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA ; Samueli, H. ; Wilson, A.N., Jr.

An optimization technique is presented for the design of two-channel lattice-structure perfect-reconstruction filter banks with powers-of-two coefficients. The filter coefficients are represented by a canonic signed-digit (CSD) code. The proposed technique requires the original optimal infinite-precision coefficients as the starting point, and searches for the set of CSD coefficients that minimizes the peak stopband ripple. Design examples are given to show that perfect-reconstruction filter banks with good filtering performance can be obtained

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Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on  (Volume:40 ,  Issue: 7 )