Title :
Elimination of constant-input limit cycles in passive lattice digital filters
Author :
Diniz, Paulo S R
Author_Institution :
Programa de Eng. Electr., Fed. Univ. of Rio de Janeiro, Brazil
fDate :
9/1/1988 12:00:00 AM
Abstract :
It is known that passive cascaded lattice digital-filter structures are free of zero-input and overflow limit cycles. The author shows that constant-input limit cycles can also be eliminated in these structures if the way input data is inserted into the network is changed. Evidently, with the change in vector B, the design equations of the output vector are modified. In addition, the scaling factor and finite-wordlength characteristics of the original lattice structure and the modified lattice structure are different. The procedure outlined can also be applied to other types of passive lattice structures
Keywords :
cascade networks; digital filters; limit cycles; passive filters; cascaded structure; constant-input limit cycles; finite-wordlength characteristics; input data insertion; limit cycles elimination; output vector; passive lattice digital filters; scaling factor; Circuits; Digital filters; IIR filters; Lattices; Limit-cycles; Low pass filters; Multidimensional signal processing; Multidimensional systems; Speech processing; Stability;
Journal_Title :
Circuits and Systems, IEEE Transactions on
