H - Electricity – 03 – H
Patent
H - Electricity
03
H
328/0.3
H03H 21/00 (2006.01) H03H 17/02 (2006.01) H04L 25/03 (2006.01)
Patent
CA 1215132
ABSTRACT "A METHOD AND APPARATUS FOR DIGITAL SIGNAL PROCESSING " Digital signal processing using a transversal filter, having an (N-1)-stage delay chain (L'L") which is fed in stepped manner at its input a with an A-value digital signal to be processed and which is provided with N tappings (0', 1',...,0", 1",...) respectively provided before and after each said stage, said stages providing respective delay steps, said tappings, being arranged to provide A-value (e.g. 2-value=binary, 3-value=ternary) tapping signal elements. Tapping-signal elements are scanned cyclically (M1',Mw',M1",Mw") in N/w groups (O', 1',2',2',...) each comprising w tapping-signal elements from consecutive tappings of the delay chain, successive groups of tappings along said delay chain providing said scanned tapping-signal elements over each cycle which respectively corresponds to each said delay step, such that each said group can provide Aw possible combinations of the tapping signal elements. Subsidiary sum signals are store (RAM) which correspond to the N/w groups and during each delay step, in accordance with the relevant N/w actual combinations of tapping signal elements, the associated subsidiary sum signals are read out and added (.SIGMA.) to one another to form an output signal element 5.
469867
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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