Optimum FIR Digital Filter Implementations for Decimation, Interpolation, and Narrow-Band Filtering
نویسنده
چکیده
In this paper a general theory of multistage decimators and interpolators for sampling rate reduction and sampling rate increase is presented. A set of curves and the necessary relations for optimally 4esigning multistage decmators is also given. It is shown that the processes of declination and interpolation are duals and therefore the same set of design curves applies to both problems. Further, it is shown that highly efficient implementations of narrow-band finite impulse response (FIR) filters can be obtained by cascading the processes of decimation and interpolation. Examples show that the efficiencies obtained are comparable to those of recursive elliptic filter designs.
منابع مشابه
Efficient Frequency-response-masking Based Fir Filter Structures for Interpolation and Decimation
This paper introduces FIR filter structures for interpolation and decimation by integer factors. They are based on the frequency-response masking (FRM) approach in which the overall filter makes use of periodic model filters and nonperiodic masking filters. By using FRM techniques it is possible to obtain FIR filters requiring few arithmetic operations even when the transition band is narrow. F...
متن کاملApplication of Hardware Efficient CIC Compensation Filter in Narrow Band Filtering
In many communication and signal processing systems, it is highly desirable to implement an efficient narrow-band filter that decimate or interpolate the incoming signals. This paper presents hardware efficient compensated CIC filter over a narrow band frequency that increases the speed of down sampling by using multiplierless decimation filters with polyphase FIR filter structure. The proposed...
متن کاملEfficient Fir Filter Structures Based on the Frequency-response Masking Approach for Interpolation and Decimation by a Factor of Two
This paper introduces FIR filter structures for interpolation and decimation by a factor of two. They are based on the frequency-response masking (FRM) approach in which the overall filter makes use of periodic model filters and nonperiodic masking filters. By using FRM techniques it is possible to obtain FIR filters requiring few multipliers even when the transition band is narrow. Further, in...
متن کاملHigh-Speed Recursive Filter Structures Composed of Identical All-Pass Subfilters for Interpolation, - Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
High-speed recursive filter structures for interpolation and decimation with factors of two, and quadrature mirror filter (QMF) banks with perfect magnitude reconstruction, are proposed. The structures are composed of identical all-pass subfilters that are interconnected via extra multipliers. For the case of interpolation and decimation filters, the overall transfer function corresponds in the...
متن کاملFilter Structures Composed of All-Pass and FIR Filters for Interpolation and Decimation by a Factor of Two
This paper introduces filter structures for interpolation and decimation by a factor of two. The structures are derived by using the frequency-response masking approach, in which the overall filter makes use of a periodic model filter, its complementary filter, and two masking filters. The periodic model filters are obtained by replacing each delay element in a model filter with M delay element...
متن کامل