基于RE-GAN的调制信号开集识别算法

doi:10.12305/j.issn.1001-506X.2023.10.37

Abstract

Abstract:

In order to solve the problem of open-set low recognition accuracy of modulation signal under the lightweight model, a model of data reconstruction and extremum theory generative adversarial network is designed. This model includes a pair of adversarial networks: reconstructed network and discriminant network. Firstly, the reconstructed network uses the autoencoder to compress and reconstruct the signal, and compresses the high-dimensional data into low-dimensional representation. Then, the discriminant network extracts the features of the compressed data and establishes the activation vector set of all kinds of data to fit the extremum distribution. Finally, the probability of known and unknown modulation signals is calculated by extremum theory. The experiment results show that the proposed model can not only fully learn and express the known modulation signals, but also disturb the unknown modulation signals. When the signal to noise ratio is greater than 0 dB, the recognition accuracy of eight known modulation signals and two unknown modulation signals can reach 93%.

Key words: data reconstruction, extreme value theory, generative adversarial network (GAN), open-set recognition, activation vector

CLC Number:

TN975

Bowei QIN, Lei JIANG, Hua XU, Weiyu NIU. Open-set recognition algorithm for modulation signal based on RE-GAN[J]. Systems Engineering and Electronics, 2023, 45(10): 3321-3328.

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References 14

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参数	取值
调制样式	8PSK, AM-DSB, BPSK, GFSK CPFSK, PAM4, QAM16, QAM64, QPSK, WBFM
样本维度	(2, 128)
样本数量	训练: 115 200 测试: 36 000
SNR	-4~18 dB (每2 dB一个间隔)

算法	网络参数	模型乘/加次数	运行时间/h	闭集识别平均分类准确率	开集识别平均分类准确率
Softmax	G: 866 88	G: 172 045	训练: 1.67	0.941	-
Softmax	D: 260 837	D: 530 118	测试: 0.03	(±0.63)	-
Openmax^[18]	654 527	1 276 481	训练: 1.20	0.803	0.845
Openmax^[18]	654 527	1 276 481	测试: 0.02	(±0.92)	(±0.65)
G-Openmax^[19]	G: 112 647	G: 228 724	训练: 1.93	0.887	0.896
G-Openmax^[19]	D: 334 658	D: 667 852	测试: 0.07	(±0.74)	(±0.37)
OLTR^[23]	867 439	1 674 892	训练: 2.18	0.894	0.905
OLTR^[23]	867 439	1 674 892	测试: 0.06	(±0.43)	(±0.77)
RE-GAN	G: 86 688	G: 172 045	训练: 1.80	0.938	0.934
RE-GAN	D: 280 841	D: 560 722	测试: 0.04	(±0.71)	(±0.68)

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Open-set recognition algorithm for modulation signal based on RE-GAN

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