A Fingerprint Extraction Method Based on I/Q Imbalance

doi:10.3969/j.issn.0372-2112.2020.04.013

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A Fingerprint Extraction Method Based on I/Q Imbalance

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- A Fingerprint Extraction Method Based on I/Q Imbalance
- Acta Electronica Sinica Vol. 48, Issue 4, Pages: 717-722(2020)
- 作者机构：
  
  1. 电信科学技术第五研究所有限公司,四川,成都,610020
  2. 成都大学信息科学与工程学院,四川,成都,610106
  3. 电信科学技术第五研究所有限公司,四川,成都,610020
  4. 成都大学信息科学与工程学院,四川,成都,610106
- 作者简介：
- 基金信息：
  
  Sichuan Science and Technology Program (No.2018GZ0072);Academy and University Collaboration Project pf Sichuan Province (No.2018JZ0065)
- DOI：10.3969/j.issn.0372-2112.2020.04.013
  CLC： TN975
- Published Online：25 April 2020，
  
  Published：2020
- 稿件说明：
移动端阅览
A Fingerprint Extraction Method Based on I/Q Imbalance[J]. Acta Electronica Sinica, 2020, 48(4): 717-722.
DOI：

A Fingerprint Extraction Method Based on I/Q Imbalance[J]. Acta Electronica Sinica, 2020, 48(4): 717-722. DOI： 10.3969/j.issn.0372-2112.2020.04.013.

摘要

针对现有的辐射源识别方法的不足，利用辐射源自身I/Q失配指纹特征的可检测、可重现、不变的特性，提出一种基于I/Q失配的新型射频指纹特征提取方法.该方法是一种基于信号空间的指纹特征提取方法，它需要对信号的信噪比进行估计.综合考虑，采用基于特征值分解的信噪比估计方法.实验仿真结果表明，在相同的信噪比条件下，基于I/Q失配的射频指纹特征提取方法比双谱、Hilbert-Huang变换信号特征提取方法具有更加优越的射频指纹识别性能.

Abstract

In view of the shortcomings of the existing method of identification of radiant sources

a novel feature extraction method based on I/Q mismatch is proposed

which can be detected

reproducible and invariable by using the I/Q mismatch fingerprint of the source. This method is a fingerprint feature extraction method based on signal space. It needs to estimate the signal-to-noise ratio of the signal. Through comprehensive consideration

the SNR estimation method based on eigenvalue decomposition is adopted. The experimental simulation results show that

under the same signal to noise ratio

the radio frequency fingerprint feature extraction method based on I/Q mismatch is superior to the dual spectrum and Hilbert-Huang transform signal feature extraction methods.

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