Single-channel blind source separation algorithm based on          a dual-encoder <italic style="font-style: italic">β</italic>-VAE and attention mechanisms

GAO Yong; LUO Tingyi

doi:10.11959/j.issn.1000-436x.TXXB260086

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Single-channel blind source separation algorithm based on a dual-encoder β-VAE and attention mechanisms

更新时间：2026-04-09

- Single-channel blind source separation algorithm based on a dual-encoder β-VAE and attention mechanisms
- Journal on Communications (2026)
- 作者机构：
  
  四川大学电子信息学院，四川成都 610065
- 作者简介：
- 基金信息：
  
  the National Key Laboratory of Wireless Communications Foundation(IFN202403)
- DOI：10.11959/j.issn.1000-436x.TXXB260086
  CLC： TN911.7
- Received：06 February 2026，
  
  Revised：2026-04-09，
  
  Accepted：09 April 2026，
- 稿件说明：
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GAO Yong, LUO Tingyi. Single-channel blind source separation algorithm based on a dual-encoder β-VAE and attention mechanisms[J/OL]. Journal on Communications, 2026.
DOI：

GAO Yong, LUO Tingyi. Single-channel blind source separation algorithm based on a dual-encoder β-VAE and attention mechanisms[J/OL]. Journal on Communications, 2026. DOI： 10.11959/j.issn.1000-436x.TXXB260086.

摘要

针对单通道盲源分离中传统方法误码率高、计算复杂度大等问题，提出基于双编码器

-VAE与注意力机制的单通道盲分离算法。该算法采用双编码器并行结构增强信号特征提取能力，引入膨胀卷积提取多尺度特征，利用Conformer模块融合局部与全局特征，在解码器中加入ECA模块以提升重构质量，并采用多损失联合优化模型。实验结果表明，所提算法能有效分离仿真场景下的双路QPSK、双路16QAM、BPSK+QPSK混合信号以及实测双路BPSK混合信号。在平稳信道的双路QPSK分离中，当误码率为10

-3

时，所提算法相较于深度分离网络（DSNet）、膨胀密集自编码器（DDAEC）和密集连接的多空洞卷积网络（D3Net）分别有约3 dB、2.5 dB和2 dB的性能提升；在非平稳信道的双路QPSK分离中，当误码率为5×10

-3

时，所提算法相较于DSNet、DDAEC和D3Net算法分别有约4 dB、1 dB和0.5 dB的性能提升；在实测双路BPSK的分离中，当误码率为5×10⁻

时，相较于逐留存路径处理算法（PSP）、DSNet、DDAEC和D3Net算法分别有约4 dB、1 dB、0.5 dB和2.5 dB的性能提升。

Abstract

To address the problems of high bit error rates

and high computational complexity in traditional single-channel blind source separation methods

a single-channel blind separation algorithm based on a dual-encoder

-VAE and attention mechanisms

was proposed. A dual-encoder parallel structure was employed to extract signal features

dilated convolutions were introduced to enlarge the receptive field

and a Conformer module was utilized to fuse local and global features. In the decoder

an ECA module was incorporated to improve reconstruction quality

and multi-loss joint optimization was adopted for model training. Experimental results show that the proposed algorithm can effectively separate dual QPSK

dual 16QAM

and BPSK+QPSK mixed signals in simulated scenarios

as well as practical dual BPSK mixed signals. In the separation of dual QPSK signals over stationary channel

the proposed algorithm achieves about 3 dB

2.5 dB and 2 dB performance gains compared with DSNet

DDAEC and D3Net algorithms at a BER of 10⁻³

respectively. While the channel is non-stationary

the proposed algorithm achieves about 4dB

1 dB and 0.5 dB performance gains compared with DSNet

DDAEC and D3Net algorithms at a BER of 5×10⁻

respectively. In the separation of practical dual BPSK signals

the proposed algorithm achieves about 4 dB

1 dB

0.5 dB and 2.5 dB performance gains compared with PSP

DSNet

DDAEC and D3Net algorithms at a BER of 5×10⁻

respectively.

关键词

Keywords

references

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Single-channel blind source separation algorithm based on a dual-encoder β-VAE and attention mechanisms

DOI：10.11959/j.issn.1000-436x.TXXB260086

摘要

Abstract

关键词

Keywords

references