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dc.contributor.authorFerrer Arnau, Luis Jorge
dc.contributor.authorRoset Juan, Francesc Xavier
dc.contributor.authorMon González, Juan
dc.contributor.authorParisi Baradad, Vicenç
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.identifier.citationFerrer-Arnau, Ll. [et al.]. Decimator filter based on B-splines. A: IMEKO World Congress. "Proceedings 19th IMEKO TC-4, Barcelona, Spain Universitat Politècnica de Catalunya July 18th and 19th, 2013". Barcelona: 2013, p. 421-425.
dc.description.abstractThe cascaded integrator-comb (CIC) filters are widely used as decimators in many applications, such as in delta sigma AD converters to decimate the sampled signal on its output. One problem with these filters is that by increasing its order to improve the signal attenuation in the stop band, worsens the passband response. In this paper we propose a so-called least-squares filters (LSF) based on B-splines to improve that response, compensating for CIC filter drop and flattening the magnitude response of the pass band. We also study the relationship between the CIC filters, otherwise called moving average, and the B-splines expanded by an integer factor. We show that the least-squares filters based on B-splines can be decomposed in CIC filters, with a higher order than the splines used, plus a compensator filter. Another important contribution of this work are the FIR approximations of anti-causal IIR filters needed to implement LSFs.
dc.format.extent5 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Filtres analògics i digitals
dc.subject.lcshPattern recognition systems--Data processing
dc.subject.otherDecimator filters
dc.subject.otherCubic B-splines
dc.subject.otherLeast squares filters
dc.subject.otherCascaded integrator-comb filters
dc.subject.otherAD Sigma delta converters
dc.titleDecimator filter based on B-splines
dc.typeConference report
dc.subject.lemacTractament del senyal
dc.subject.lemacSplines (Matemàtica)
dc.contributor.groupUniversitat Politècnica de Catalunya. TIEG - Terrassa Industrial Electronics Group
dc.contributor.groupUniversitat Politècnica de Catalunya. SARTI - Centre de Desenvolupament Tecnològic de Sistemes d'Adquisició Remota i Tractament de la Informació
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
upcommons.citation.authorFerrer-Arnau, Ll.; Roset, Xavier; Mon, J.; Parisi, V.
upcommons.citation.contributorIMEKO World Congress
upcommons.citation.publicationNameProceedings 19th IMEKO TC-4, Barcelona, Spain Universitat Politècnica de Catalunya July 18th and 19th, 2013

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