DOI码：10.1109/TMTT.2023.3327468

所属单位：中国科学技术大学信息学院

教研室：电子工程与信息科学系

发表刊物：IEEE Transactions on Microwave Theory and Techniques

项目来源：国家自然科学基金

关键字：Digital predistortion (DPD), intermodulation (IMD), model complexity, multiband (MB), piecewise linear function, piecewise model, Polar Volterra, power amplifiers (PAs).

摘要：In this article, we present a low-complexity adaptive digital predistortion (DPD) model for concurrent multiband (MB) power amplifiers (PAs). A novel MB basis function space is constructed for the proposed MB vector combination search (MB-VCS) model by performing multidimensional extensions and adding piecewise linear functions to the Polar Volterra series. The proposed basis function multiplexing-based model search algorithm also helps the MB-VCS model to balance model performance and complexity. The MB-VCS model contains novel in-band and cross-band terms to characterize complex interactions between different band signals and can adaptively construct intermodulation (IMD) terms to handle arbitrary carrier configurations. In order to further exploit the advantages of the MB-VCS model, the MB piecewise VCS (MB-PVCS) model with MB-VCS as a submodel based on the piecewise modeling technique is proposed in this article, and an efficient classification controller construction strategy is designed for the MB-PVCS model. The experimental test results confirm that the MB-VCS and MB-PVCS models achieve a better performance-complexity tradeoff than the state-of-the-art MB single and MB piecewise models.

合写作者：Chengye Jiang,Guichen Yang,Qianqian Zhang

第一作者：Renlong Han (韩仁龙)

论文类型：期刊论文

通讯作者：Falin Liu

论文编号：10.1109/TMTT.2023.3327468

学科门类：工学

文献类型：J

卷号：72

期号：6

页面范围：3410-3422

是否译文：否

发表时间：2024-06-01

收录刊物：SCI、EI