High-efficiency walsh LMS-based digital predistortion RF power amplifiers

カテゴリ：国際会議

論文No：B1

グループ名：【C】AVIC2025

発行日：2025/10/20

著者名：Maxandre Fellmann (Universite de Bordeaux), Francois Rivet (Universite de Bordeaux), Nathalie Deltimple (Universite de Bordeaux), Pierre Ferrer (Universite de Bordeaux), Remi Queheille (Universite de Bordeaux), Herve Lapuyade (Universite de Bordeaux), Yann Deval (Universite de Bordeaux), Eric Kerherve (Universite de Bordeaux)

キーワード：Power Amplifier,DPD,Walsh,LMS

要約(英語)：This paper presents a digital pre-distortion (DPD) for the linearization of RF Power Amplifiers (PAs). Its objective is to improve its convergence speed and reduce its power consumption. The Walsh transform is used as a computational basis to evaluate a predistorter (PD) model. A block-based Walsh Least Mean Squares (WLMS) method is developed to determine the optimal DPD coefficients. Linearization results are presented through simulations and measurements to validate the process in both narrowband and wideband configurations for FR1 5G NR standards. Comparison with conventional DPD algorithms shows that the WLMS converges 10 times faster and consumes up to 20 times less power while maintaining linearization performance comparable to the best DPDs.

本誌掲載ページ：25-28p

原稿種別：英語

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