Low-Complexity Subband Digital Predistortion for Spurious Emission Suppression in Noncontiguous Spectrum Access

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dc.citation.firstpage3501en_US
dc.citation.issueNumber11en_US
dc.citation.journalTitleIEEE Transactions on Microwave Theory and Techniquesen_US
dc.citation.lastpage3517en_US
dc.citation.volumeNumber64en_US
dc.contributor.authorAbdelaziz, Mahmouden_US
dc.contributor.authorAnttila, Laurien_US
dc.contributor.authorTarver, Chanceen_US
dc.contributor.authorLi, Kaipengen_US
dc.contributor.authorCavallaro, Joseph R.en_US
dc.contributor.authorValkama, Mikkoen_US
dc.date.accessioned2017-11-29T16:35:27Zen_US
dc.date.available2017-11-29T16:35:27Zen_US
dc.date.issued2016en_US
dc.description.abstractNoncontiguous transmission schemes combined with high power-efficiency requirements pose big challenges for radio transmitter and power amplifier (PA) design and implementation. Due to the nonlinear nature of the PA, severe unwanted emissions can occur, which can potentially interfere with neighboring channel signals or even desensitize the own receiver in frequency division duplexing transceivers. In this paper, to suppress such unwanted emissions, a low-complexity subband digital predistortion solution, specifically tailored for spectrally noncontiguous transmission schemes in low-cost devices, is proposed. The proposed technique aims at mitigating only the selected spurious intermodulation distortion components at the PA output, hence allowing for substantially reduced processing complexity compared with classical linearization solutions. Furthermore, novel decorrelation-based parameter learning solutions are also proposed and formulated, which offer reduced computing complexity in parameter estimation as well as the ability to track time-varying features adaptively. Comprehensive simulation and RF measurement results are provided, using a commercial LTE-Advanced mobile PA, to evaluate and validate the effectiveness of the proposed solution in real-world scenarios. The obtained results demonstrate that highly efficient spurious component suppression can be obtained using the proposed solutions.en_US
dc.identifier.citationAbdelaziz, Mahmoud, Anttila, Lauri, Tarver, Chance, et al.. "Low-Complexity Subband Digital Predistortion for Spurious Emission Suppression in Noncontiguous Spectrum Access." <i>IEEE Transactions on Microwave Theory and Techniques,</i> 64, no. 11 (2016) IEEE: 3501-3517. https://doi.org/10.1109/TMTT.2016.2602208.en_US
dc.identifier.digitalInitial_TMTT_JournalArticle_8_Dec_2015en_US
dc.identifier.doihttps://doi.org/10.1109/TMTT.2016.2602208en_US
dc.identifier.urihttps://hdl.handle.net/1911/98870en_US
dc.language.isoengen_US
dc.publisherIEEEen_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by IEEE.en_US
dc.titleLow-Complexity Subband Digital Predistortion for Spurious Emission Suppression in Noncontiguous Spectrum Accessen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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