arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2302.01035cs.ITeess.SPmath.IT
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基于深度学习的预测波束形成设计

Deep Learning Based Predictive Beamforming Design

Juping Zhang, Gan Zheng, Yangyishi Zhang, Ioannis Krikidis, Kai-Kit Wong

摘要:

本文研究了深度学习技术,在多用户多输入单输出下行链路中仅基于历史信道数据而不基于当前信道信息来预测发射波束成形。这将显著减少信道估计开销,并提高频谱效率,特别是在高移动性车辆通信中。具体来说,我们提出了一个联合学习框架,结合信道预测和功率优化,并直接产生发射波束成形的预测。此外,我们提出利用长短期记忆回归神经网络中的注意力机制来提高信道预测的准确性。利用简单的自回归过程模型和更真实的3GPP空间信道模型的仿真结果表明,与传统的信道估计和分别预测信道然后优化波束形成的方法相比,本文提出的预测波束形成方案可以显著提高有效频谱效率。

英文摘要:

This paper investigates deep learning techniques to predict transmit beamforming based on only historical channel data without current channel information in the multiuser multiple-input-single-output downlink. This will significantly reduce the channel estimation overhead and improve the spectrum efficiency especially in high-mobility vehicular communications. Specifically, we propose a joint learning framework that incorporates channel prediction and power optimization, and produces prediction for transmit beamforming directly. In addition, we propose to use the attention mechanism in the Long Short-Term Memory Recurrent Neural Networks to improve the accuracy of channel prediction. Simulation results using both a simple autoregressive process model and the more realistic 3GPP spatial channel model verify that our proposed predictive beamforming scheme can significantly improve the effective spectrum efficiency compared to traditional channel estimation and the method that separately predicts channel and then optimizes beamforming.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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