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A method to design low-complexity FIR Hilbert transformers with narrow transition bands and small ripples is presented in this paper. The proposal is based on a strategic combination of the Frequency-Response Masking (FRM) and Frequency Transformation (FT) techniques. The FT technique is employed to divide the overall filter in several identical simple subfilters, whereas the FRM technique is employed...
Finite Impulse Response (FIR) Hilbert Transformers (HTs) have a high complexity when they are designed with a very sharp transition band and a small ripple. This complexity is dominated by multipliers, the most expensive elements in a digital filter. Frequency Transformation (FT) is a technique to design FIR filters with repeated simple identical subfilters, which can be used to reduce the overall...
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