基于轻量级深度神经网络的电磁信号调制识别技术

张思成; 林云; 涂涯; ShiwenMao

doi:10.11959/j.issn.1000-436x.2020237

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基于轻量级深度神经网络的电磁信号调制识别技术

专题：面向6G的智能无线通信关键技术 | 更新时间：2024-06-05

- 基于轻量级深度神经网络的电磁信号调制识别技术
- Electromagnetic signal modulation recognition technology based on lightweight deep neural network
- 通信学报 2020年41卷第11期页码：12-21
- 作者机构：
  
  1. 哈尔滨工程大学信息与通信工程学院，黑龙江哈尔滨 150001
  2. 奥本大学电子和计算机工程学院，奥本 36849
- 作者简介：
  
  [ "张思成（1996- ），男，山东临沂人，哈尔滨工程大学博士生，主要研究方向为基于深度学习的智能电磁信号处理" ]
  [ "林云（1980- ），男，黑龙江哈尔滨人，哈尔滨工程大学在站博士后，哈尔滨工程大学教授、博士生导师，主要研究方向为人工智能、深度学习、信号识别和智能信息对抗等" ]
  [ "涂涯（1994- ），男，湖北十堰人，哈尔滨工程大学博士生，主要研究方向为信号处理、深度学习等" ]
  [ "Shiwen Mao（1971- ），男，湖南岳阳人，博士，奥本大学教授，主要研究方向为无线网络、多媒体通信和智能电网" ]
- 基金信息：
  
  国家自然科学基金资助项目(61771154);中央高校基本科研业务费基金资助项目(3072020CF0813)
- DOI：10.11959/j.issn.1000-436x.2020237
  中图分类号： TN971
- 网络首发：2020-11，
  
  纸质出版：2020-11-25
- 稿件说明：
移动端阅览
张思成, 林云, 涂涯, 等. 基于轻量级深度神经网络的电磁信号调制识别技术[J]. 通信学报, 2020,41(11):12-21.

Sicheng ZHANG, Yun LIN, Ya TU, et al. Electromagnetic signal modulation recognition technology based on lightweight deep neural network[J]. Journal on Communications, 2020, 41(11): 12-21.
张思成, 林云, 涂涯, 等. 基于轻量级深度神经网络的电磁信号调制识别技术[J]. 通信学报, 2020,41(11):12-21. DOI： 10.11959/j.issn.1000-436x.2020237.

Sicheng ZHANG, Yun LIN, Ya TU, et al. Electromagnetic signal modulation recognition technology based on lightweight deep neural network[J]. Journal on Communications, 2020, 41(11): 12-21. DOI： 10.11959/j.issn.1000-436x.2020237.

摘要

针对6G时代将会是移动通信与人工智能紧密结合的时代，产生数量庞大的边缘智能信号处理节点的趋势，提出了一种可部署于资源受限的边缘设备上的高效智能电磁信号识别模型。首先，通过绘制电磁信号的星座图将电磁信号具象为二维图像，并根据归一化点密度对星座图上色以实现特征增强；然后，使用二值化深度神经网络对其进行识别，在保证识别准确率的同时明显降低了模型存储开销以及计算开销。采用电磁信号调制识别

问题进行验证，实验选取常用的8种数字调制信号，选择加性高斯白噪声为信道环境。实验结果表明，所提方案可以在信噪比为-6～6 dB的噪声条件下获得96.1%的综合识别率，网络模型大小仅为166 KB，部署于树莓派4B的执行时间为290 ms，相比于同规模的全精度网络，准确率提升了0.6%，模型缩减到

，运行时间缩减到

。

Abstract

In response to the trend that in the 6th generation wireless (6G) era

mobile communications and artificial intelligence will be closely integrated

and a huge number of edge intelligent signal processing nodes will be deployed

an efficient and intelligent electromagnetic signal recognition model was proposed

which could be deployed on resource-constrained edge devices.The constellation diagram of electromagnetic signal was firstly drawn to visualize electromagnetic signal as a two-dimensional image

and color the constellation diagram according to the normalized point density to achieve feature enhancement.Then

a binary deep neural network was adopted to recognize the colored constellation diagrams.It was shown that the approach can guarantee a high recognition accuracy

which significantly reduced the model storage and calculation costs.For verification

the proposed approach was applied to the problem of electromagnetic signal modulation recognition.The experiment uses eight commonly used digital modulation signals and selects additive white Gaussian noise as the channel environment.The experimental results show that the scheme can achieve a comprehensive recognition rate of 96.1% under the noise condition of -6～6 dB

while the size of the network model is only 166 KB.Further

the execution time

when executed on a Raspberry Pi 4B

is only 290 ms.Compared to a full-precision network of the same scale

the accuracy is increased by 0.6%

the model is reduced to

and the running time is reduced to

关键词

Keywords

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