arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2108.04548cs.ITmath.IT
收藏

基于循环神经网络的mmWave信道自适应波束跟踪

Adaptive Beam Tracking based on Recurrent Neural Networks for mmWave Channels

Saeid K. Dehkordi, Mari Kobayashi, Giuseppe Caire

摘要:

由于高的各向同性路径损耗和信道衰减,毫米波(mmWave)通信的性能关键地取决于基站(BS)和用户终端(UE)处的波束成形的准确性。在高移动性环境中,准确的波束对准变得更具挑战性,因为BS和每个UE的角度必须被可靠地和连续地跟踪。在这项工作中,专注于在BS的波束成形,我们提出了一种自适应方法的基础上循环神经网络(RNN),跟踪和预测的角度出发(AoD)的一个给定的UE。此外,我们提出了一种改进的帧结构,以减少波束对准开销,从而提高通信速率。我们的数值实验在一个高度非线性的流动性的情况下,我们所提出的方法是能够准确地跟踪AoD,实现更高的通信速率相比,更传统的方法,如粒子滤波。

英文摘要:

The performance of millimeter wave (mmWave) communications critically depends on the accuracy of beamforming both at base station (BS) and user terminals (UEs) due to high isotropic path-loss and channel attenuation. In high mobility environments, accurate beam alignment becomes even more challenging as the angles of the BS and each UE must be tracked reliably and continuously. In this work, focusing on the beamforming at the BS, we propose an adaptive method based on Recurrent Neural Networks (RNN) that tracks and predicts the Angle of Departure (AoD) of a given UE. Moreover, we propose a modified frame structure to reduce beam alignment overhead and hence increase the communication rate. Our numerical experiments in a highly non-linear mobility scenario show that our proposed method is able to track the AoD accurately and achieve higher communication rate compared to more traditional methods such as the particle filter.

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。

↑