Title :
Wave digital filters using carry-save arithmetic
Author :
Kleine, U. ; Noll, T.G.
Author_Institution :
Siemens AG, Munich, West Germany
Abstract :
A carry-save approach for the implementation of high-speed bit-parallel recursive digital filters is presented. Special mapping rules for translating a carry-propagate arithmetic into a carry-save arithmetic are described and finite wordlength effects, especially carry-save saturation characteristics and the truncation behavior, are considered to ensure the stability of the filters. The proposed carry-save arithmetics ensure the full pseudopassivity and the forced response stability of the circuits. The carry-save technique is illustrated with an example of a third-order lattice wave digital filter.<>
Keywords :
digital arithmetic; parallel processing; stability; wave digital filters; bit-parallel; carry-save arithmetic; carry-save saturation characteristics; finite wordlength effects; forced response stability; high-speed; mapping rules; pseudopassivity; recursive digital filters; third order lattice type; truncation behavior; wave digital filter; Adders; Circuits; Clocks; Delay effects; Digital arithmetic; Digital filters; Frequency; Laboratories; Strontium; Throughput;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15275
