期刊
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
卷 31, 期 1, 页码 37-40出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2020.3035288
关键词
Mathematical model; Histograms; Computational modeling; Computational complexity; Memory management; Radio frequency; Predistortion; Computational complexity; digital predistortion (DPD); power amplifier (PA)
资金
- Spanish Government Ministerio de Ciencia, Innovacion y Universidades (MICINN)
- Fonds Europeen de Developpement Economique et Regional [European Fund for Economic and Regional Development (FEDER)] [TEC2017-83343-C4-2-R]
- Generalitat de Catalunya [2017 SGR 813]
The proposed MeS method, when combined with dimensionality reduction techniques, can significantly reduce training data and decrease the computational complexity of parameter identification.
This letter proposes a mesh-selecting (MeS) method for complex-valued signals oriented at significantly reducing the training data required to extract the parameters of mathematical models for characterizing the nonlinear behavior of power amplifiers or digital predistortion linearizers. Experimental results will show the advantages of the proposed MeS method when properly combined with dimensionality reduction techniques. A reduction of the parameters' identification computational complexity by a factor of 65 can be achieved with respect to training with consecutive samples and employing the commonly used QR least-squares solution.
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