An Enhanced Transfer Learning-Based Automatic Modulation Recognition Method for OFDM-VLC System

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-04-22 DOI:10.1109/LPT.2025.3563388

Hong Wen;Zixiong Gao;Qinghui Chen;Jun Zhou

引用次数: 0

Abstract

In this letter, an enhanced transfer learning-based automatic modulation recognition (AMR) scheme is proposed and experimentally demonstrated in orthogonal frequency division multiplexing visible light communication (OFDM-VLC) systems. Within the proposed Gaussian transfer learning (GTL) framework, a ResNet deep convolutional neural network (DCNN) is constructed using Gaussian constellations as the training set. The performance of the proposed method is evaluated by using GoogLeNet, AlexNet and ImageNet transfer learning (ITL) as benchmarks. Experimental results show that, using only 120 training samples with a limited number of constellation points per sample, ResNet with ITL achieves accuracy improvements of 13% and 7% over GoogLeNet and AlexNet with ITL, respectively. Furthermore, ResNet with the proposed GTL achieves an additional 4% accuracy enhancement compared to ResNet utilising conventional ITL.

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基于迁移学习的OFDM-VLC系统调制自动识别方法

本文提出了一种增强的基于迁移学习的自动调制识别方案，并在正交频分复用可见光通信（OFDM-VLC）系统中进行了实验验证。在提出的高斯迁移学习（GTL）框架内，以高斯星座为训练集构建了ResNet深度卷积神经网络（DCNN）。通过使用GoogLeNet、AlexNet和ImageNet迁移学习（ITL）作为基准，对所提方法的性能进行了评估。实验结果表明，仅使用120个训练样本，每个样本的星座点数量有限，与使用ITL的GoogLeNet和AlexNet相比，使用ITL的ResNet的准确率分别提高了13%和7%。此外，与使用传统ITL的ResNet相比，使用拟议GTL的ResNet实现了额外4%的精度提高。

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 Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.