dc.contributor
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.contributor
Universitat Politècnica de Catalunya. Doctorat en Teoria del Senyal i Comunicacions
dc.contributor
Universitat Politècnica de Catalunya. CSC - Components and Systems for Communications Research Group
dc.contributor.author
Gilabert Pinal, Pere Lluís
dc.contributor.author
López Bueno, David
dc.contributor.author
Montoro López, Gabriel
dc.date.issued
2018-01-01
dc.identifier
Gilabert, P. L.; López, D.; Montoro, G. Spectral weighting orthogonal matching pursuit algorithm for enhanced out-of-band digital predistortion linearization. "IEEE transactions on circuits and systems II: express briefs", 1 Gener 2018, vol. 66, núm. 7, p. 1277-1281.
dc.identifier
https://hdl.handle.net/2117/174239
dc.identifier
10.1109/TCSII.2018.2878581
dc.description.abstract
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dc.description.abstract
This paper presents a new variant of the orthogonal matching pursuit (OMP) algorithm for reducing the computational complexity of the digital predistortion (DPD) behavioral model in the forward path. The proposed spectral weighting OMP (SW-OMP) algorithm focuses on selecting the most relevant basis functions to compensate for the out-of-band residual distortion which may eventually be masked by the dominant in-band residual error. This basis selection is carried out in an off-line process that does not affect the computational complexity of the real-time closed-loop DPD but, on the contrary, reduces its complexity while enhancing the robustness. Experimental results show that by selecting the DPD coefficients with the SW-OMP, the inherent ACLR and NMSE degradation suffered when reducing the number of coefficients is mitigated under strong nonlinear operation, when compared to using the basis functions selected by the classical OMP algorithm.
dc.description.abstract
Peer Reviewed
dc.description.abstract
Postprint (author's final draft)
dc.format
application/pdf
dc.relation
https://ieeexplore.ieee.org/document/8515056
dc.subject
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.subject
Àrees temàtiques de la UPC::Enginyeria electrònica::Circuits electrònics
dc.subject
Very high speed integrated circuits
dc.subject
Sustainable development
dc.subject
5G mobile communication
dc.subject
Power amplifiers
dc.subject
Digital predistortion linearization
dc.subject
Circuits integrats d'alta velocitat
dc.subject
Desenvolupament sostenible
dc.title
Spectral weighting orthogonal matching pursuit algorithm for enhanced out-of-band digital predistortion linearization
