REALIZATION OF FINITE IMPULSE-RESPONSE FILTERS USING COEFFICIENTS+1,0, AND -1

被引:27
作者
BENVENUTO, N
FRANKS, LE
HILL, FS
机构
[1] UNIV MASSACHUSETTS,DEPT ELECT & COMP ENGN,AMHERST,MA 01003
[2] AT&T BELL LABS,HOLMDEL,NJ 07733
关键词
ELECTRIC FILTERS; DIGITAL - MATHEMATICAL PROGRAMMING; DYNAMIC - SIGNAL PROCESSING - Digital Techniques;
D O I
10.1109/TCOM.1985.1096225
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
New classes of nonrecursive linear digital filters are proposed as alternatives to conventional methods for digital signal processing devices. In fact, the traditional approach, where signal samples are represented by 8-15 bit words, can be very expensive to implement due to the complexity of multibit multipliers and adders. Filter structures consisting of a transversal filter with tap coefficients restricted to minus 1, 0, or plus 1 and cascaded with simple recursive sections are proposed. Using a mean square error criterion, dynamic programming methods to select optimum sets of coefficient values for the taps are presented and evaluated. It is shown that these structures lend themselves to very simple hardware implementations and offer a valid alternative to the conventional filtering approach. Designs for several example filters are presented, and their implementation complexity is examined.
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页码:1117 / 1125
页数:9
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