Frequency-Based Optimization Design for Fractional Delay FIR Filters with Software-Defined Radio Applications

摘要

A frequency-designed fractional delay FIR structure, which is suitable for software radioapplications, is presented. The design method is based on frequency optimization of acombination of modified Farrow and mutirate structures. As a result the optimizationfrequency range is made only in half of desired total bandwidth. According to the obtainedresults the proposed fractional delay structure allows online desired fractional delay update,with a high fractional delay value resolution.