A complex-error and phase-error constrained least-squares design of FIR filters with reduced group delay error

Abstract

The group delay of a linear-phase FIR filter is about half of its length. Existing methods for low group-delay FIR filter design usually result in large group delay error, noticeably towards the bandedges. Recently, Lai [2] presented a constrained least-squares design method that can specify both magnitude-error and phase-error upper bounds. Reduced group… (More)

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