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dc.contributor.authorPham, Thi Quynh Anh
dc.contributor.authorLópez Bueno, David
dc.contributor.authorWang, Teng
dc.contributor.authorMontoro López, Gabriel
dc.contributor.authorGilabert Pinal, Pere Lluís
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationPham, T., López, D., Wang, T., Montoro, G., Gilabert, P. L. Partial least squares identification of multi look-up table digital predistorters for concurrent dual-band envelope tracking power amplifiers. "IEEE transactions on microwave theory and techniques", 2 Agost 2018, vol. 66, núm. 12, p. 5143-5150.
dc.description©208 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
dc.description.abstractThis paper presents a technique to estimate the coefficients of a multiple-look-up table (LUT) digital predistortion (DPD) architecture based on the partial least-squares (PLS) regression method. The proposed 3-D distributed memory LUT architecture is suitable for efficient FPGA implementation and compensates for the distortion arising in concurrent dual-band envelope tracking power amplifiers. On the one hand, a new variant of the orthogonal matching pursuit algorithm is proposed to properly select only the best LUTs of the DPD function in the forward path, and thus reduce the number of required coefficients. On the other hand, the PLS regression method is proposed to address both the regularization problem of the coefficient estimation and, at the same time, reducing the number of coefficients to be estimated in the DPD feedback identification path. Moreover, by exploiting the orthogonality of the PLS transformed matrix, the computational complexity of the parameters' identification can be significantly simplified. Experimental results will prove how it is possible to reduce the DPD complexity (i.e., the number of coefficients) in both the forward and feedback paths while meeting the targeted linearity levels.
dc.format.extent8 p.
dc.publisherIEEE Microwave Theory and Techniques Society
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors
dc.subject.lcshData structures (Computer science)
dc.subject.otherDigital predistortion (DPD)
dc.subject.otherEnvelope tracking (ET)
dc.subject.otherLook-up tables (LUTs)
dc.subject.otherPartial least squares (PLS)
dc.subject.otherPower amplifier (PA)
dc.subject.otherPrincipal component analysis (PCA)
dc.titlePartial least squares identification of multi look-up table digital predistorters for concurrent dual-band envelope tracking power amplifiers
dc.subject.lemacEstructures de dades (Informàtica)
dc.contributor.groupUniversitat Politècnica de Catalunya. CSC - Components and Systems for Communications Research Group
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
local.citation.authorPham, T.; López, D.; Wang, T.; Montoro, G.; Gilabert, Pere L.
local.citation.publicationNameIEEE transactions on microwave theory and techniques

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