A simple method for designing a hierarchical structure transversal filter
A. Kawahashi, S. Nakanura, Yoshihiko Horio, Y. Kadowaki · 1991
A simple method for designing a hierarchical structure transversal filter (HSTF) with a linear phase is described. The HSTF can provide an output equivalent to a higher-order FIR (finite impulse response) digital filter due to using a number of lower-order FIR digital subfilters. Designing of the HSTF is required only to determine a low-order FIR subfilter provided that a multiple mapping function is given. Therefore, this method can save a lot of computation in the design of an FIR filter with a long length. This structure is also suitable for parallel processing concerned with the subfilters and an LSI implementation.>