A comparison of cascade and wave fixed-point digital-filter structures

Antoniou, A.; Rezk, M.

doi:10.1109/tcs.1980.1084766

Cited by 25 publications

(4 citation statements)

References 18 publications

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“…Similar to continuous-time signals, discrete-time signals can be demonstrated in different ways. One possible and applicable technique is the transformation of the time domain signal into a frequency domain through the Fourier transform technique, as (5) demonstrates (Antoniou and Rezk, 1977):…”

Section: Sequences Through Fourier Transformmentioning

confidence: 99%

Software-based Control Algorithm for Providing Convergence Region with an Increasing Polynomial under Windowed FIR Filters

Bimbi¹,

Oliveira²,

Fleury³

et al. 2018

Journal of Computer Science

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This work developed a control algorithm for dynamical systems to high performance manner, in a way to produce an optimum output applying a modification in digital filters, capable of increasing the convergence zone within the desired cutoff frequency. Such task focused on consistently improving the challenge present in digital filters, which are time-invariant linear systems that are able to modify connected input signal characteristics, where only a specific signal component of the frequency is able to reach the filter output. In dynamic systems, digital filters are applied to optimize system measurements with respect to performance and stability. This work, through C and C# coding demonstrates a modification to windowed low-pass filters within the π sample space. The π sample space is divided, and small parts of the equation are added into a polynomial of degree n; this technique removes unwanted frequency components in small angular frequency windows, causing acceleration of the signal with respect to the windowed low-pass filter. This feature is very important in dynamic measurement systems because the system achieves an increased number in values closer to the target to obtain an average that indicates values with a high level of accuracy and repeatability. This work also conducted a series of experiments to verify and validate the control algorithm, this software was fully implemented in embedded industrial systems, which support lowlevel C coding language that is the industry standard.

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Section: Sequences Through Fourier Transformmentioning

confidence: 99%

Software-based Control Algorithm for Providing Convergence Region with an Increasing Polynomial under Windowed FIR Filters

Bimbi¹,

Oliveira²,

Fleury³

et al. 2018

Journal of Computer Science

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“…The GIC digital filters have comparable sensitivity and noise characteristics in relation to the wave digital filters derived from doubly terminated LC networks. 2 New GIC digital filter structures are proposed in this paper which have better sensitivity and noise properties than those proposed in References 1 and 2. The improvements are achieved by making use of a new type of GIC adaptor and elementary two-port adaptors.…”

Section: Introductionmentioning

confidence: 97%

New low-sensitivity and low-noise GIC digital filter structures

Rao

Manivannan

Eswaran

1991

Can. J. Electr. Comput. Eng.

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New digital filter structures based on the concept of generalized-immittance convertors (GICs) are proposed. These structures are shown to possess better sensitivity and noise properties than the already known GIC structures. A comparison study is carried out using different types of sensitivity and noise measures. Further, it is shown that the limit cycles under zero-input and forced response conditions can be eliminated in the proposed filters. With suitable modifications, these filters can be stabilized against constant-input limit cycles as well.De nouveaux types de filtres numeriques bases sur le concept de convertisseurs d'immittances generalises (CIG) sont presentes. On montre que ces structures possedent une meilleur sensibilite et des proprietes d'immunite aux bruits superieures aux structures CIG existantes. On y effectue une etude comparative a l'aide de diverses mesures de sensibilite et de bruit. On montre egalement que ces filtres eliminent les cycles limites consecutifs a une entree nulle et les conditions dues aux reponses forcees. Avec les modifications appropriees, ces filtres peuvent etre stabilises par rapport aux cycles limites dus a une entree constante. T< ADAPTOR 1 1 ADAPTOR J

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“…INTRODUCTION OUNDOFF noise can be reduced in recursive digital -R filters by increasing the wordlength [l], by choosing the structure appropriately [2], [3], or by applying errorspectrum shaping (ESS) [4]-[8].…”

mentioning

confidence: 99%

Low-sensitivity digital-filter structures which are amenable to error-spectrum shaping

Diniz

Antoniou

1985

IEEE Trans. Circuits Syst.

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A/~ract -A systematic and exhaustive procedure is used to generate a class of new low-sensitivity second-order digital-filter structures which are amenable to error-spectrum shaping (ESS). Collectively, these structures can realize any stable second-order transfer function. For every transfer function, a choice of at least two structures is available but, through a sensitivity analysis, the optimum one can always be identified. The paper concludes with sensitivity and roundoff-noise comparisons which show that the new structures are usually superior relative to corresponding direct canonic structures and also relative to the state-space section-optimal structure.

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A comparison of cascade and wave fixed-point digital-filter structures

Cited by 25 publications

References 18 publications

Software-based Control Algorithm for Providing Convergence Region with an Increasing Polynomial under Windowed FIR Filters

Software-based Control Algorithm for Providing Convergence Region with an Increasing Polynomial under Windowed FIR Filters

New low-sensitivity and low-noise GIC digital filter structures

Low-sensitivity digital-filter structures which are amenable to error-spectrum shaping

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