UM
The dispersal analysis on basis construction of digital predistortion techniques for power amplifiers
Yue L; Chak-Fong Cheang; Pui-In Mak; Rui P. Martins
2016
Source PublicationAnalog Integrated Circuits and Signal Processing
ISSN09251030
Volume86Issue:1Pages:77-86
Abstract

Digital predistortion (DPD) exploiting the Volterra series can effectively compensate the strong nonlinearities (with memory effects) of power amplifiers. Diverse pruning schemes have been proposed to reduce the computational complexity with comparative performances. Regrettably, the mechanism of basis construction in different DPDs that is related to the complexity-efficiency tradeoff has not been well-studied. In order to compare methodically the Volterra-series based DPDs, the key parameters of the basis are studied here. Especially for the cross terms that describe the interaction between nonlinearities and memory effect, the complexity-efficiency tradeoff cannot be addressed directly. Thus, the basis construction of DPDs is firstly mapped to the general Volterra-series to observe the pruning property of each DPD. The diagonal dispersal property on basis construction is concluded as the most efficient and reliable way for pruning DPD techniques. The running complexity-accuracy tradeoff is quantitatively analyzed via the number of floating point operations. With the best performance settings found by the Qhull algorithm, the experimental results show that (1) the nonlinear order of the cross terms is more significant than the related memory depth, and (2) basis construction with diagonal dispersal properties effectively shows the complexity-efficiency tradeoff of different DPDs. These results offer new angles to assess the feasibility of DPDs and their involved complexity.

KeywordBasis Construction Complexity Digital Pre-distortion (Dpd) Floating Point Operations (Flops) Nonlinearity Power Amplifier (Pa) Volterra Series
DOIhttp://doi.org/10.1007/s10470-015-0665-1
URLView the original
Indexed BySCI
Language英语
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Hardware & Architecture ; Engineering, Electrical & Electronic
WOS IDWOS:000367750900010
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorPui-In Mak
AffiliationState-Key Laboratory of Analog and Mixed-Signal VLSI and Faculty of Science and Technology, Department of ECE, University of Macau, Macao, China
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Yue L,Chak-Fong Cheang,Pui-In Mak,et al. The dispersal analysis on basis construction of digital predistortion techniques for power amplifiers[J]. Analog Integrated Circuits and Signal Processing,2016,86(1):77-86.
APA Yue L,Chak-Fong Cheang,Pui-In Mak,&Rui P. Martins.(2016).The dispersal analysis on basis construction of digital predistortion techniques for power amplifiers.Analog Integrated Circuits and Signal Processing,86(1),77-86.
MLA Yue L,et al."The dispersal analysis on basis construction of digital predistortion techniques for power amplifiers".Analog Integrated Circuits and Signal Processing 86.1(2016):77-86.
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