Tree-Structured Linear-Phase Nyquist FIR Filter Interpolators and Decimators

摘要

The master thesis is based upon a new type of linear-phase Nyquist finitie impulse responseinterpolator and decimator implemented using a tree-structure. The tree-structure decreasesthe complexity, considerably, compared to the ordinary single-stage interpolator structure.The computational complexity is comparable to a multi-stage Nyquist interpolator structure,but the proposed tree-structure has slightly higher delay. The tree-structure should still beconsidered since it can interpolate with an arbitrary number and all subfilters operate at thebase rate which is not the case for multi-stage Nyquist interpolators.