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Frequency-Response Masking Filters Based on Serial Masking Schemes

Research paper by Ying Wei, Yong Lian

Indexed on: 05 Jun '09Published on: 05 Jun '09Published in: Circuits, Systems, and Signal Processing



Abstract

In this paper, computationally efficient filter structures based on the frequency-response masking (FRM) technique are proposed for the synthesis of arbitrary bandwidth sharp finite impulse response (FIR) filters. A serial masking scheme is introduced in the new structures to perform the masking task in two stages, which reduces the complexity of the masking filters. Compared to the original FRM and interpolated FIR-FRM (IFIR-FRM) structures, the proposed structures achieve additional savings in terms of numbers of arithmetic operations.