Two-Rate Based Structures for Computationally Efficient Wide-Band FIR Systems
نویسندگان
چکیده
Many digital signal processing (DSP) systems tend to have a very high computational complexity when they target a large part of the Nyquist band. This corresponds to a wide-band system with one or several so called don’t-care bands approaching zero. Examples of such systems include frequency selective filters, fractional-delay filters, and differentiators. This chapter considers finite-length impulse response (FIR) filters due to their attractive implementation features. In particular, they can be implemented with non-recursive structures. In contrast to infinite-length impulse response (IIR) filters, they are therefore always automatically stable and have no bound on the maximal sampling rate, see [1, 2].
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