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基于LSTM-DNN混合模型的紫外线通信中的通道均等化
1School of Computer Information Engineering, Nanchang Institute of Technology, Nanchang, China. zlw810305@163.com.
Scientific reports
|May 18, 2025
概括
这项研究引入了一个长短期记忆 - 深度神经网络 (LSTM-DNN) 模型,通过降低因信号减弱引起的比特误差率 (BER) 和平均平方误差 (MSE) 来改善紫外线通信 (UVC).
科学领域:
- 无线光学通信无线光学通信
- 信号处理 信号处理
- 机器学习应用 机器学习应用
背景情况:
- 紫外线通信 (UVC) 由于大气散射而遭受高比特误差率 (BER).
- 现有的通道均方法在UVC通道中与复杂的非线性作斗争.
- 无线光通信的进步凸显了需要改进均衡技术的需要.
研究的目的:
- 为UVC提出一种新的基于深度神经网络 (LSTM-DNN) 的长短记忆 - 深度神经网络 (LSTM-DNN) 的通道均化方法.
- 为了提高UVC系统中的信号恢复精度和传输质量.
- 解决非线性UVC通道中传统均等化方法的局限性.
主要方法:
- 开发了一个LSTM-DNN模型,集成LSTM用于时间依赖性和DNN用于非线性特征提取.
- 在UVC系统中应用LSTM-DNN模型进行道均等.
- 将LSTM-DNN的性能与LMS,RLS,PSO,SVM和MMSE等传统方法进行了比较.
主要成果:
- 与传统方法相比,LSTM-DNN模型显著降低了比特错误率 (BER) 和平均平方错误 (MSE).
- 在0dB SNR下,LSTM-DNN实现了0.135的BER,超过了LMS (0.45) 和MMSE (0.20).
- 在20dB的SNR,LSTM-DNN的BER降至0.015,表现出强的性能和平均降低约67.8%的BER和约70.8%的MSE.
结论:
- LSTM-DNN模型为UVC通道平衡提供了卓越的性能,提高了信号恢复精度和传输质量.
- 这种方法有效地减轻了UVC中的信号衰减问题,显示出高精度和稳定性.
- 拟议的LSTM-DNN方法具有重要的理论价值和用于先进的UVC系统的实际应用.
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