An Out-of-Band Spectrum Suppression Technique for Frequency Division Duplexing Communication Systems

IF 4.4 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-06-04 DOI:10.1109/LCOMM.2025.3576499

Yuchen Bian;Jun Peng;Wei Liu;Songbai He;Fei You;Tianyang Zhong;Yijie Tang;Xinyu Wang;Leyan Wan

引用次数: 0

Abstract

The conventional full-band (FB) digital predistortion (DPD) method could be ineffective in frequency division duplexing (FDD) communication systems, particularly when power amplifiers (PAs) are driven into the near-saturation region. This letter introduces an out-of-band (OOB) spectrum suppression technique with an anti-aliasing architecture to mitigate the spectrum spreading effect of PAs. The proposed anti-aliasing architecture significantly reduces computational complexity compared to existing methods. The experimental results show that the proposed method achieves better ACPR performance than existing methods, while it reduces the computational complexity by approximately 80%.

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频分双工通信系统的带外频谱抑制技术

传统的全频带（FB）数字预失真（DPD）方法在频分双工（FDD）通信系统中可能是无效的，特别是当功率放大器（pa）被驱动到近饱和区域时。本文介绍了一种带外（OOB）频谱抑制技术，该技术具有抗混叠架构，以减轻PAs的频谱扩展效应。与现有方法相比，所提出的抗混叠结构显著降低了计算复杂度。实验结果表明，该方法比现有方法具有更好的ACPR性能，同时将计算复杂度降低了约80%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.