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CLC number: TN911.3

On-line Access: 2023-05-31

Received: 2022-06-10

Revision Accepted: 2023-05-31

Crosschecked: 2022-08-26

Cited: 0

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Citations:  Bibtex RefMan EndNote GB/T7714


Xiang LI


Yibing LI


Chunrui TANG


Yingsong LI


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Frontiers of Information Technology & Electronic Engineering  2023 Vol.24 No.5 P.742-758


Modulation recognition network of multi-scale analysis with deep threshold noise elimination

Author(s):  Xiang LI, Yibing LI, Chunrui TANG, Yingsong LI

Affiliation(s):  College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China; more

Corresponding email(s):   chunruitang@126.com

Key Words:  Signal noise elimination, Deep adaptive threshold learning network, Multi-scale feature fusion, Modulation recognition

Xiang LI, Yibing LI, Chunrui TANG, Yingsong LI. Modulation recognition network of multi-scale analysis with deep threshold noise elimination[J]. Frontiers of Information Technology & Electronic Engineering, 2023, 24(5): 742-758.

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%T Modulation recognition network of multi-scale analysis with deep threshold noise elimination
%A Xiang LI
%A Yibing LI
%A Chunrui TANG
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T1 - Modulation recognition network of multi-scale analysis with deep threshold noise elimination
A1 - Xiang LI
A1 - Yibing LI
A1 - Chunrui TANG
A1 - Yingsong LI
J0 - Frontiers of Information Technology & Electronic Engineering
VL - 24
IS - 5
SP - 742
EP - 758
%@ 2095-9184
Y1 - 2023
PB - Zhejiang University Press & Springer
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DOI - 10.1631/FITEE.2200253

To improve the accuracy of modulated signal recognition in variable environments and reduce the impact of factors such as lack of prior knowledge on recognition results, researchers have gradually adopted deep learning techniques to replace traditional modulated signal processing techniques. To address the problem of low recognition accuracy of the modulated signal at low signal-to-noise ratios, we have designed a novel modulation recognition network of multi-scale analysis with deep threshold noise elimination to recognize the actually collected modulated signals under a symmetric cross-entropy function of label smoothing. The network consists of a denoising encoder with deep adaptive threshold learning and a decoder with multi-scale feature fusion. The two modules are skip-connected to work together to improve the robustness of the overall network. Experimental results show that this method has better recognition accuracy at low signal-to-noise ratios than previous methods. The network demonstrates a flexible self-learning capability for different noise thresholds and the effectiveness of the designed feature fusion module in multi-scale feature acquisition for various modulation types.




Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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