Article(id=1251226686180765853, tenantId=1146029695717560320, journalId=1251194772300279900, issueId=1251226682309423223, articleNumber=null, orderNo=null, doi=10.20079/j.issn.1001-893x.240625003, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1719244800000, receivedDateStr=2024-06-25, revisedDate=1727280000000, revisedDateStr=2024-09-26, acceptedDate=null, acceptedDateStr=null, onlineDate=1776245288652, onlineDateStr=2026-04-15, pubDate=1764259200000, pubDateStr=2025-11-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776245288652, onlineIssueDateStr=2026-04-15, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776245288652, creator=13041195026, updateTime=1776245288652, updator=13041195026, issue=Issue{id=1251226682309423223, tenantId=1146029695717560320, journalId=1251194772300279900, year='2025', volume='65', issue='11', pageStart='1729', pageEnd='1954', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1776245287729, creator=13041195026, updateTime=1776246742124, updator=13041195026, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1251232782568080068, tenantId=1146029695717560320, journalId=1251194772300279900, issueId=1251226682309423223, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1251232782568080069, tenantId=1146029695717560320, journalId=1251194772300279900, issueId=1251226682309423223, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1859, endPage=1868, ext={EN=ArticleExt(id=1251226686931546299, articleId=1251226686180765853, tenantId=1146029695717560320, journalId=1251194772300279900, language=EN, title=Automatic Modulation Recognition Based on Phase Parameter Estimation and Spatial Reconstruction, columnId=1251226683223781499, journalTitle=Telecommunication Engineering, columnName=Application Fundamental Research and Advanced Technology, runingTitle=null, highlight=null, articleAbstract=
For the problem that the existing deep learning modulation recognition algorithms are not robust enough and have insufficient generalization ability in complex signal environments,a multi-channel network based on phase parameter estimation and spatial reconstruction(PET-SAMCL) is proposed. First,the input in-phase quadature(IQ) signal is converted by phase parameter estimation and divided into three modules to extract the amplitude-phase feature,IQ combination and branching features of IQ respectively. A spatial reorganization unit(SRU) is added to the feature extraction module to reduce the influence of redundant features. The spatial features are refined and fused by global average pooling and soft attention operations,and the temporal and spatial features are extracted by gated recurrent units(GRU) and bidirectional gated recurrent units(BiGRU) . Ablation study determines the optimal model structure. The model performs well on the RML2016.10a dataset,achieving a maximum recognition accuracy of 93.9% at 14 dB,and the average recognition rate is increased by 7.7% compared with that of other models.
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针对现有深度学习调制识别算法在复杂信号环境下的鲁棒性和泛化能力不足的问题,提出了一种基于相位参数估计和空间重建的多通道网络(Phase Estimation and Spatial Reconstruction-based Attention Mechanism Multi-channel Network,PET-SAMCL)。首先,将输入的同相正交信号(In-phase Quadrature,IQ)通过相位参数估计转换,分成3个模块分别提取IQ的幅度-相位特征、IQ合路以及分路特征。在特征提取模块中加入空间重建单元(Spatial Reconstruction Unit,SRU),减少冗余特征的影响。利用全局平均池化和软注意力操作对空间特征进行提炼与融合,通过门控循环单元(Gated Recurrent Unit,GRU)及双向门控循环单元(Bidirectional Gated Recurrent Unit,BiGRU)提取时间和空间特征。通过消融实验确定了最优模型结构。该模型在RML2016.10a数据集上表现优异,在14 dB时达到了93.9%的最高识别准确率,平均识别率相较其他模型最大提高了7.7%。
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张子胤 男,2000年生于江苏兴化,2022年获学士学位,现为硕士研究生,主要研究方向为调制识别算法研究、深度学习。
李大鹏 男,1982年生于山东临清,2011年于上海交通大学获博士学位,现为教授,主要研究方向为新一代通信、人工智能、无人系统等新技术。
单国强 男,1996年生于江苏盐城,2019年获学士学位,现为硕士研究生,主要研究方向为多智能体强化学习。
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| 模型类型 | 模型名称 | 输入数据 | 主要结构 |
|---|
| 卷积神经网络 | CNN1[2] | I/Q | 2卷积层+全连接层 |
| CNN2[18] | I/Q | 4卷积层+全连接层 |
| ICAMCNET[6] | I/Q | CNN+Gaussian noise |
| 递归神经网络 | GRU2[7] | I/Q | 2 GRU layers |
| LSTM2[19] | Amplitude/Phase | 2LSTM layers |
| 混合模型 | CLDNN[8] | I/Q | CNN+LSTM+Skip connections |
| CGDNet[10] | I/Q | CNN+GRU+DNN |
| PET-CGDNN[11] | I/Q | CNN+GRU+DNN |
| MCLDNN[9] | I/Q, I and Q | 多通道(I/Q、I、Q)+CNN+2 LSTM layers |
| PET-SAMCL | I/Q | 多通道(IQ分路、合路、幅度/相位)+CNN(添加空间重建单元)+GRU+BiGRU |
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模型结构对照
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| 模型类型 | 模型名称 | 输入数据 | 主要结构 |
|---|
| 卷积神经网络 | CNN1[2] | I/Q | 2卷积层+全连接层 |
| CNN2[18] | I/Q | 4卷积层+全连接层 |
| ICAMCNET[6] | I/Q | CNN+Gaussian noise |
| 递归神经网络 | GRU2[7] | I/Q | 2 GRU layers |
| LSTM2[19] | Amplitude/Phase | 2LSTM layers |
| 混合模型 | CLDNN[8] | I/Q | CNN+LSTM+Skip connections |
| CGDNet[10] | I/Q | CNN+GRU+DNN |
| PET-CGDNN[11] | I/Q | CNN+GRU+DNN |
| MCLDNN[9] | I/Q, I and Q | 多通道(I/Q、I、Q)+CNN+2 LSTM layers |
| PET-SAMCL | I/Q | 多通道(IQ分路、合路、幅度/相位)+CNN(添加空间重建单元)+GRU+BiGRU |
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| 对照模型 | 网络框架 |
|---|
| PET-SAMCL_A | PartA(无SRU模块)+PartB+PartC |
| PET-SAMCL_B | PartA+PartB(无Conv(5,5,64))+PartC |
| PET-SAMCL_C | PartA+PartB+PartC(GRU代替Bi-GRU) |
| PET-SAMCL_D | PartA+PartB+PartC(增加全连接层) |
| PET-SAMCL | PartA+PartB+PartC |
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消融实验对照模型
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| 对照模型 | 网络框架 |
|---|
| PET-SAMCL_A | PartA(无SRU模块)+PartB+PartC |
| PET-SAMCL_B | PartA+PartB(无Conv(5,5,64))+PartC |
| PET-SAMCL_C | PartA+PartB+PartC(GRU代替Bi-GRU) |
| PET-SAMCL_D | PartA+PartB+PartC(增加全连接层) |
| PET-SAMCL | PartA+PartB+PartC |
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| 模型 | 学习参数 | 最小验证损失 | 平均识别精确度 | 训练时间(秒/周期) |
|---|
| a | b | a | b | a | b | a | b |
|---|
| PET-SAMCL | 351015 | 350758 | 1.0626 | 0.8843 | 0.6186 | 0.6447 | 21 | 90 |
| MCLDNN | 406199 | 406070 | 1.0848 | 0.8892 | 0.6121 | 0.6432 | 16 | 82 |
| PET-CGDNN | 71871 | 71742 | 1.1474 | 0.9003 | 0.5903 | 0.6377 | 9 | 47 |
| CNN1 | 1592383 | 1592126 | 1.2152 | 0.9978 | 0.5453 | 0.5785 | 3 | 14 |
| CNN2 | 858123 | 857994 | 1.1930 | 0.9865 | 0.5548 | 0.5874 | 5 | 25 |
| CLDNN | 164433 | 164176 | 1.2360 | 1.0128 | 0.5416 | 0.5827 | 7 | 32 |
| CGDNet | 124933 | 124676 | 1.1932 | 0.9282 | 0.5605 | 0.6247 | 7 | 33 |
| GRU2 | 151179 | 151050 | 1.1243 | 0.8890 | 0.5897 | 0.6439 | 14 | 67 |
| ICAMCNET | 1264011 | 1263882 | 1.1814 | 0.9652 | 0.5617 | 0.6117 | 4 | 20 |
| LSTM2 | 201099 | 200970 | 1.0637 | 0.8897 | 0.6097 | 0.6400 | 14 | 63 |
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模型性能比较
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| 模型 | 学习参数 | 最小验证损失 | 平均识别精确度 | 训练时间(秒/周期) |
|---|
| a | b | a | b | a | b | a | b |
|---|
| PET-SAMCL | 351015 | 350758 | 1.0626 | 0.8843 | 0.6186 | 0.6447 | 21 | 90 |
| MCLDNN | 406199 | 406070 | 1.0848 | 0.8892 | 0.6121 | 0.6432 | 16 | 82 |
| PET-CGDNN | 71871 | 71742 | 1.1474 | 0.9003 | 0.5903 | 0.6377 | 9 | 47 |
| CNN1 | 1592383 | 1592126 | 1.2152 | 0.9978 | 0.5453 | 0.5785 | 3 | 14 |
| CNN2 | 858123 | 857994 | 1.1930 | 0.9865 | 0.5548 | 0.5874 | 5 | 25 |
| CLDNN | 164433 | 164176 | 1.2360 | 1.0128 | 0.5416 | 0.5827 | 7 | 32 |
| CGDNet | 124933 | 124676 | 1.1932 | 0.9282 | 0.5605 | 0.6247 | 7 | 33 |
| GRU2 | 151179 | 151050 | 1.1243 | 0.8890 | 0.5897 | 0.6439 | 14 | 67 |
| ICAMCNET | 1264011 | 1263882 | 1.1814 | 0.9652 | 0.5617 | 0.6117 | 4 | 20 |
| LSTM2 | 201099 | 200970 | 1.0637 | 0.8897 | 0.6097 | 0.6400 | 14 | 63 |
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