Type

Journal Article

Authors

Chris J. Bleakley
Luciano Boquete-Vázquez
Juan Ignacio Godino-Llorente
José David Osés del Campo
Fernando Cruz-Roldán

Subjects

Computer Science

Topics
networks frequency sampling technique dsp multirate signal processing filtering theory decimation and interpolation filtering space energy

Polyphase FIR Networks Based on Frequency Sampling for Multirate DSP Applications (2010)

Abstract It is well known that the frequency sampling approach to the design of Finite Impulse Response digital filters allows recursive implementations which are computationally efficient when most of the frequency samples are integers, powers of 2 or null. The design and implementation of decimation (or interpolation) filters using this approach is studied herein. Firstly, a procedure is described which optimizes the tradeoff between the stopband energy and the deviation of the passband from the ideal filter. The search space is limited to a small number of samples (in the transition band), imposing the condition that the resulting filter have a large number of zeros in the stopband. Secondly, three different structures to implement the decimation (or interpolation) filter are proposed. The implementation complexity, i.e., the number of multiplications and additions per input sample, are derived for each structure. The results show that, without taking into account finite word-length effects, the most efficient implementation depends on the filter length to decimation (or interpolation) ratio.
Collections Ireland -> University College Dublin -> School of Computer Science
Ireland -> University College Dublin -> Computer Science Research Collection

Full list of authors on original publication

Chris J. Bleakley, Luciano Boquete-Vázquez, Juan Ignacio Godino-Llorente, José David Osés del Campo, Fernando Cruz-Roldán

Experts in our system

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Chris Bleakley
University College Dublin
Total Publications: 105