RFFI Protocols Using Antenna Mutual Coupling and Power Amplifier Nonlinear Memory Effects

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-04-08 DOI:10.1109/LCOMM.2025.3558555

Yuepei Li;Symon K. Podilchak;Junqing Zhang;Simon L. Cotton;Tharmalingam Ratnarajah;Yuan Ding

引用次数: 0

Abstract

This letter presents a radio frequency fingerprinting identification (RFFI) protocol in wireless links with multi-antenna array transmitters. Multi-antenna systems are widely used in wireless communication systems for diversity and/or multiplexing. The mutual coupling (MC) effects arising from electromagnetic interactions between adjacent array elements can influence the RF characteristics of the transmitter and eventually the performance of the established links. In this letter, a novel RFF strategy is proposed to expand the differences in the RFF characteristics among wireless devices from the same vendor, with the goal of massively improving RFF classification accuracy in low to medium signal-to-noise ratio (SNR) channel conditions. Experimental results show that when classifying six power amplifiers (PAs) from the same vendor, 21% to 62% average classification accuracy improvement can be achieved by enlarging the RFF feature differences arising from the PA nonlinearity arising from the array coupling.

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基于天线互耦和功率放大器非线性记忆效应的RFFI协议

本文介绍了一种多天线阵列发射机无线链路中的射频指纹识别（RFFI）协议。多天线系统广泛用于无线通信系统的分集和/或多路复用。相邻阵列元件之间的电磁相互作用所产生的相互耦合效应会影响发射机的射频特性，并最终影响所建立链路的性能。在这封信中，提出了一种新的RFF策略，以扩大来自同一供应商的无线设备之间RFF特性的差异，目标是在中低信噪比（SNR）信道条件下大幅提高RFF分类精度。实验结果表明，在对同一厂商的6个功率放大器进行分类时，通过增大阵列耦合引起的功率放大器非线性引起的RFF特征差异，可以将分类精度平均提高21% ~ 62%。

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.