An Upgraded Dual-Band Digital Predistorter Model for Power Amplifiers Linearization

被引：3

作者：

Perez-Hernandez, Abraham ^{[1
]}

Becerra, Juan A. ^{[1
]}

Jose Madero-Ayora, Maria ^{[1
]}

Crespo-Cadenas, Carlos ^{[1
]}

机构：

[1] Univ Seville, Dept Teoria Senal & Comu Nicac, Escuela Tecn Super Ingn, Seville 41092, Spain

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2021年 / 31卷 / 01期

关键词：

Dual band; Mathematical model; Standards; Predistortion; Computational modeling; Radio frequency; Bandwidth; Digital predistortion (DPD); dual-band signal; power amplifiers (PAs); Volterra series; REDUCTION;

D O I：

10.1109/LMWC.2020.3040101

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Digital predistortion (DPD) based on Volterra models is commonly employed to counteract the nonlinear distortion of power amplifiers. However, when concurrent dual-band signals are transmitted, 2-D DPD models are required. In this work, upgrading of a standard dual-band model is proposed and justified using multinomial theorem. The linearization performance of the current proposal has been compared to the unextended model. Fifth generation (5G) New Radio signals have been generated to compose a dual-band signal, which later was employed as input signal at Chalmers University of Technology's RF WebLab. Using coefficient selection techniques, the most relevant regressors are shown, and the importance of the new extension is proven. Linearization results highlight the benefits of this proposal.

引用

页码：33 / 36

页数：4

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