A channel resilient RFF extraction scheme for cyclic prefix contained systems

IF 2 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Physical Communication Pub Date : 2024-07-20 DOI:10.1016/j.phycom.2024.102444

Zhen Zhang , Aiqun Hu , Xinyu Qi , Tianshu Chen

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引用次数: 0

Abstract

Radio frequency fingerprint (RFF) based identification technique has been proved efficient for ensuring the validity of devices connected to network. However, it is still a tough task to extract robust RFF in the scenarios with multi-path channel and moving terminals. To solve this problem, this paper proposes a channel-resilient RFF extraction scheme which can effectively reduce the influences from complex channel condition and retain robust device fingerprint. In the proposed system, blind synchronization and symbol-scale carrier frequency offset (CFO) estimation are designed for signal preprocessing for preparations of the following RFF extraction. A cyclic-prefix based de-channel algorithm (CPDCA) which can effectively weaken channel interference is proposed to meet the channel robustness of our system. Additionally, symbol-scale feature stacking algorithm (SFSA) is applied for RFF denoising, which can further enhance the performance of proposed system. Experiments using practical dataset collected from Long Term Evolution (LTE)-V2X communication system has been carried out under different signal-to-noise ratio (SNR). The results demonstrate that the proposed scheme has the ability to extract channel-robust RFF and to achieve reliable classification performance under complex channel conditions.

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包含循环前缀系统的信道弹性 RFF 提取方案

事实证明，基于射频指纹（RFF）的识别技术能有效确保连接到网络的设备的有效性。然而，在多径信道和终端移动的情况下，如何提取稳健的射频指纹仍是一项艰巨的任务。为解决这一问题，本文提出了一种抗信道干扰的 RFF 提取方案，该方案能有效降低复杂信道条件的影响，并保留稳健的设备指纹。在所提出的系统中，设计了盲同步和符号尺度载波频率偏移（CFO）估计来进行信号预处理，为接下来的 RFF 提取做准备。为了满足系统的信道鲁棒性，我们提出了一种基于循环前缀的去信道算法（CPDCA），它能有效削弱信道干扰。此外，我们还采用了符号尺度特征堆叠算法（SFSA）对 RFF 进行去噪处理，从而进一步提高了系统的性能。在不同信噪比（SNR）条件下，使用从长期演进（LTE）-V2X 通信系统中收集的实际数据集进行了实验。结果表明，所提出的方案能够提取信道可靠的 RFF，并在复杂信道条件下实现可靠的分类性能。

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来源期刊

Physical Communication ENGINEERING, ELECTRICAL & ELECTRONICTELECO-TELECOMMUNICATIONS

CiteScore

5.00

自引率

9.10%

发文量

212

审稿时长

55 days

期刊介绍： PHYCOM: Physical Communication is an international and archival journal providing complete coverage of all topics of interest to those involved in all aspects of physical layer communications. Theoretical research contributions presenting new techniques, concepts or analyses, applied contributions reporting on experiences and experiments, and tutorials are published. Topics of interest include but are not limited to: Physical layer issues of Wireless Local Area Networks, WiMAX, Wireless Mesh Networks, Sensor and Ad Hoc Networks, PCS Systems; Radio access protocols and algorithms for the physical layer; Spread Spectrum Communications; Channel Modeling; Detection and Estimation; Modulation and Coding; Multiplexing and Carrier Techniques; Broadband Wireless Communications; Wireless Personal Communications; Multi-user Detection; Signal Separation and Interference rejection: Multimedia Communications over Wireless; DSP Applications to Wireless Systems; Experimental and Prototype Results; Multiple Access Techniques; Space-time Processing; Synchronization Techniques; Error Control Techniques; Cryptography; Software Radios; Tracking; Resource Allocation and Inference Management; Multi-rate and Multi-carrier Communications; Cross layer Design and Optimization; Propagation and Channel Characterization; OFDM Systems; MIMO Systems; Ultra-Wideband Communications; Cognitive Radio System Architectures; Platforms and Hardware Implementations for the Support of Cognitive, Radio Systems; Cognitive Radio Resource Management and Dynamic Spectrum Sharing.