State Space Structure of Digital Filters
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02
A technique is described whereby digital filters utilize state space structure implementation, so as to minimize errors due to finite word length limitations. The technique is unique in that throughout the pipelining structure, no new zeros are created which would normally require pole-zero cancellation, thereby reducing hardware circuit requirements and improving overall performance of the filter. Described is the use of digital filter difference equations and pipelining equations in the development and implementation of the state space structure so that no new zeros are created requiring pole-zero cancellation.