Article(id=1251856523270500879, tenantId=1146029695717560320, journalId=1251234268282663017, issueId=1251856520619700745, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1003-3106.2025.11.004, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1753200000000, receivedDateStr=2025-07-23, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1776395453516, onlineDateStr=2026-04-17, pubDate=1762272000000, pubDateStr=2025-11-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776395453516, onlineIssueDateStr=2026-04-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776395453516, creator=13701087609, updateTime=1776395453516, updator=13701087609, issue=Issue{id=1251856520619700745, tenantId=1146029695717560320, journalId=1251234268282663017, year='2025', volume='55', issue='11', pageStart='2131', pageEnd='2324', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1776395452885, creator=13701087609, updateTime=1776395571911, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1251857019939013255, tenantId=1146029695717560320, journalId=1251234268282663017, issueId=1251856520619700745, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1251857019939013256, tenantId=1146029695717560320, journalId=1251234268282663017, issueId=1251856520619700745, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2163, endPage=2173, ext={EN=ArticleExt(id=1251856523601850898, articleId=1251856523270500879, tenantId=1146029695717560320, journalId=1251234268282663017, language=EN, title=Automatic Modulation Recognition Method Based on Time-Frequency Feature Fusion, columnId=1251856523492798993, journalTitle=Radio Engineering, columnName=Signal and Information Processing, runingTitle=null, highlight=null, articleAbstract=
To solve the problem that Automatic Modulation Recognition (AMR) is limited by small-sample data and insufficient fusion of time-frequency multimodal information in practical applications, which in turn leads to low recognition accuracy, the limitations of existing technologies in the AMR field are analyzed and a cross-modal self-supervised learning framework integrating a diffusion model and a contrastive learning mechanism is proposed. By introducing the diffusion model, the framework leverages its generative capability to achieve high-quality data synthesis and augmentation of communication signals, effectively alleviating the constraints of small-sample data on model training. Meanwhile, combined with the cross-modal contrastive learning mechanism, it constructs an inter-modal association learning module to fully explore and utilize the inherent correlations and complementary information between different time-frequency modal representations, thus solving the problem of insufficient multimodal information fusion. Finally, based on the above design, a Diffusion-Contrastive Hybrid Network (DCHN) model is established. Experimental results show that the recognition accuracy of this model on the RML2016.10a dataset is significantly higher than that of other network models, indicating that it possesses excellent recognition capability.
, correspAuthors=Shubin WANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Dan BO, Kai WANG, Yunsheng LIU, Shubin WANG), CN=ArticleExt(id=1251856534112777118, articleId=1251856523270500879, tenantId=1146029695717560320, journalId=1251234268282663017, language=CN, title=基于时频特征融合的自动调制识别方法, columnId=1251856523803177493, journalTitle=无线电工程, columnName=信号与信息处理, runingTitle=null, highlight=null, articleAbstract=
针对自动调制识别(Automatic Modulation Recognition,AMR)在实际应用中受限于小样本数据、时频多模态信息融合不充分,进而导致识别准确率较低的问题,对AMR领域现有技术的局限性进行了简要分析,提出了一种融合扩散模型与对比学习机制的跨模态自监督学习框架。该框架通过引入扩散模型,利用其生成能力实现通信信号高质量数据合成与增强,有效缓解小样本数据对模型训练的约束;同时结合跨模态对比学习机制,构建模态间关联学习模块,充分挖掘和利用时频不同模态表示之间的内在关联与互补信息,解决多模态信息融合不充分的痛点,最终基于上述设计构建了“扩散-对比混合网络(Diffusion-Contrastive Hybrid Network,DCHN)”模型。实验结果显示,该模型在RML2016.10a数据集上的识别准确率较其他网络模型有较大提升,具备较好的识别能力。
, correspAuthors=王树彬, authorNote=null, correspAuthorsNote=
王树彬 男,(1971—),博士,教授。主要研究方向:智能无线通信及其应用、物联网、网络人工智能。
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薄丹 女,(1996—),硕士研究生。主要研究方向:自动调制识别。
王凯 男,(1998—),硕士研究生。主要研究方向:频谱感知。
刘云升 男,(1981—)。主要研究方向:信息化与大数据。
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1.内蒙古大学 电子信息工程学院,内蒙古 呼和浩特 010021
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3.内蒙古自治区大数据中心,内蒙古 呼和浩特 010021)])], figs=[ArticleFig(id=1251856538399354992, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=EN, label=Fig.1, caption=
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完整的通信系统示意, figureFileSmall=9LkHA5NUt1r4FWY4zwRVfQ==, figureFileBig=f+y0vcCzsBeIIOYCr9PUww==, tableContent=null), ArticleFig(id=1251856538810396807, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=EN, label=Fig.2, caption=
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基于扩散模型的信号数据增强流程, figureFileSmall=eQyZe5PeBz1MXRScrXrDXw==, figureFileBig=S0d018C4vbFR7hLOBZjynA==, tableContent=null), ArticleFig(id=1251856540613947543, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=EN, label=Fig.3, caption=
Schematic diagram of adaptive time-frequency analysis network module, figureFileSmall=1YNdO34Y1YI7+ARPankM8w==, figureFileBig=ueZ+u1tUIOlf08+a4/W0Ag==, tableContent=null), ArticleFig(id=1251856540693639324, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=CN, label=图3, caption=
自适应时频分析网络模块示意, figureFileSmall=1YNdO34Y1YI7+ARPankM8w==, figureFileBig=ueZ+u1tUIOlf08+a4/W0Ag==, tableContent=null), ArticleFig(id=1251856540781719713, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=EN, label=Fig.4, caption=
Schematic diagram of cross-modal contrastive learning framework, figureFileSmall=Xqe3UGHRRSHanq29dKUGQA==, figureFileBig=N2/ZaN0bkicVd0XdXV6zCg==, tableContent=null), ArticleFig(id=1251856540882383013, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=CN, label=图4, caption=
跨模态对比学习框架示意, figureFileSmall=Xqe3UGHRRSHanq29dKUGQA==, figureFileBig=N2/ZaN0bkicVd0XdXV6zCg==, tableContent=null), ArticleFig(id=1251856541075321005, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=EN, label=Fig.5, caption=
Schematic diagram of model structure, figureFileSmall=8rT6sWpIAfgVy0erP46Y+Q==, figureFileBig=6K0+WS7ubYHHL8mgV4iTOA==, tableContent=null), ArticleFig(id=1251856541167595696, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=CN, label=图5, caption=
模型结构示意, figureFileSmall=8rT6sWpIAfgVy0erP46Y+Q==, figureFileBig=6K0+WS7ubYHHL8mgV4iTOA==, tableContent=null), ArticleFig(id=1251856541280841911, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=EN, label=Fig.6, caption=
Ablation experiment, figureFileSmall=KTtoAn3wWGms+R3aQ5edDA==, figureFileBig=k3T8iFNnFVdYi3Q+Lw516A==, tableContent=null), ArticleFig(id=1251856541343756474, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=CN, label=图6, caption=
消融实验, figureFileSmall=KTtoAn3wWGms+R3aQ5edDA==, figureFileBig=k3T8iFNnFVdYi3Q+Lw516A==, tableContent=null), ArticleFig(id=1251856541406671038, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=EN, label=Fig.7, caption=
Comparative experiment, figureFileSmall=gHyxhLlUi8wrZdaj1ZLekg==, figureFileBig=HSBdDeZXJl1E5gdOl7oh0A==, tableContent=null), ArticleFig(id=1251856541486362819, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=CN, label=图7, caption=
对比实验, figureFileSmall=gHyxhLlUi8wrZdaj1ZLekg==, figureFileBig=HSBdDeZXJl1E5gdOl7oh0A==, tableContent=null), ArticleFig(id=1251856541570248902, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=EN, label=Fig.8, caption=
Confusion matrix of different models under SNR of-6 dB and 12 dB, figureFileSmall=bPnVwNHopll1C9/HPkhrlg==, figureFileBig=sHfQjYWwMYSPQEnpZearnw==, tableContent=null), ArticleFig(id=1251856541662523596, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=CN, label=图8, caption=
SNR为-6 dB和12 dB时不同模型的混淆矩阵, figureFileSmall=bPnVwNHopll1C9/HPkhrlg==, figureFileBig=sHfQjYWwMYSPQEnpZearnw==, tableContent=null), ArticleFig(id=1251856541721243854, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856523270500879, language=EN, label=Tab.1, caption=
RML2016.10a dataset parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类别 | 内容 |
|---|
| 数据样式 | I/Q两路 |
| 数据维度 | 2×128 |
| 调制样式 | WBFM、AM-DSB、AM-SSB、BPSK、CPFSK、GFSK、4-PAM、16-QAM、64-QAM、QPSK、8PSK |
| SNR | [-20,18] dB,间隔2 dB,共20个 |
| 单SNR样本数 | 1000 |
| 总样本数 | 220000 |
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RML2016.10a数据集参数
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| 类别 | 内容 |
|---|
| 数据样式 | I/Q两路 |
| 数据维度 | 2×128 |
| 调制样式 | WBFM、AM-DSB、AM-SSB、BPSK、CPFSK、GFSK、4-PAM、16-QAM、64-QAM、QPSK、8PSK |
| SNR | [-20,18] dB,间隔2 dB,共20个 |
| 单SNR样本数 | 1000 |
| 总样本数 | 220000 |
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Experimental working environment
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| 实验环境 | 硬件信息、软件版本 |
|---|
| 系统环境 | Windows 10 |
| Python | 3.9 |
| TensorFlow | 2.8 |
| CUDA | 11.6 |
| CUDNN | 8.4 |
| GPU | NVIDIA GeForce RTX 3050 Laptop GPU |
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实验工作环境
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| 实验环境 | 硬件信息、软件版本 |
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| 系统环境 | Windows 10 |
| Python | 3.9 |
| TensorFlow | 2.8 |
| CUDA | 11.6 |
| CUDNN | 8.4 |
| GPU | NVIDIA GeForce RTX 3050 Laptop GPU |
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Accuracy of ablation experiment
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| 模型 | 平均准确率 | 最高准确率 |
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| 模型1 | 63.66 | 92.95 |
| 模型2 | 61.76 | 91.23 |
| 模型3 | 63.54 | 92.77 |
| 模型4 | 64.88 | 93.75 |
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消融实验准确率
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| 模型 | 平均准确率 | 最高准确率 |
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| 模型1 | 63.66 | 92.95 |
| 模型2 | 61.76 | 91.23 |
| 模型3 | 63.54 | 92.77 |
| 模型4 | 64.88 | 93.75 |
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Modulation recognition of different models
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| 模型 | 平均准确率 | 最高准确率 |
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| OURS | 64.88 | 93.75 |
| CGDNet | 62.03 | 90.58 |
| ResNet | 60.78 | 91.60 |
| CLDNN | 58.30 | 84.70 |
| DenseNet | 59.94 | 87.98 |
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不同模型的调制识别
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| 模型 | 平均准确率 | 最高准确率 |
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| CGDNet | 62.03 | 90.58 |
| ResNet | 60.78 | 91.60 |
| CLDNN | 58.30 | 84.70 |
| DenseNet | 59.94 | 87.98 |
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