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- W2029695384 abstract "In this paper, we design a digital predistortion(DPD) for linearity enhancement of RF power amplifier operating in 900 MHz band. We verify improvement of linearity by comparing the proposed DPD using tanh as a nonlinear indexing function and the DPD using linear indexing function based on signal amplitude. The digital predistortion is realized by look-up table(LUT) method, and the Saleh model is employed for power amplifier modeling, then a commercial power amplifier module is used for measurement. The LUT has 256 tables, and the NLMS(Normalized Least Mean Square) algorithm was utilized for an adaptive algorithm for estimation. As a result, we improve the ACLR(Adjacent Channel Leakage Ratio) by around 15 dB." @default.
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- W2029695384 date "2011-04-30" @default.
- W2029695384 modified "2023-09-24" @default.
- W2029695384 title "Linearity Enhancement of RF Power Amplifier Using Digital Predistortion with Tanh as a Nonlinear Indexing Function" @default.
- W2029695384 cites W2105814684 @default.
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- W2029695384 doi "https://doi.org/10.5515/kjkiees.2011.22.4.7430" @default.
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