arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.06042eess.SPcs.ITcs.LGmath.IT
收藏

基于RSSI和深度学习的混合波束形成设计

RSSI-Based Hybrid Beamforming Design with Deep Learning

École Polytechnique de Montréal(蒙特利尔综合理工学院)

Hamed Hojatian, Vu Nguyen Ha, Jérémy Nadal, Jean-François Frigon, François Leduc-Primeau

摘要:

混合波束成形是5G毫米波通信的一种很有前途的技术。然而,它的实现在实际的多输入多输出(MIMO)系统中是具有挑战性的,因为非凸优化问题必须解决,引入额外的延迟和能量消耗。另外,信道状态信息(CSI)必须从导频信号估计或者通过专用信道反馈,从而引入大的信令开销。在本文中,混合预编码器设计的基础上,只有从每个用户的接收信号强度指示符(RSSI)的反馈。提出了一种深度学习方法来执行具有合理复杂度的相关优化。结果表明,所得到的和率是非常接近的全CSI最优,但复杂的解决方案。最后,与现有技术相比,所提出的解决方案允许大大增加系统的频谱效率,因为需要最小的CSI反馈。

英文摘要:

Hybrid beamforming is a promising technology for 5G millimetre-wave communications. However, its implementation is challenging in practical multiple-input multiple-output (MIMO) systems because non-convex optimization problems have to be solved, introducing additional latency and energy consumption. In addition, the channel-state information (CSI) must be either estimated from pilot signals or fed back through dedicated channels, introducing a large signaling overhead. In this paper, a hybrid precoder is designed based only on received signal strength indicator (RSSI) feedback from each user. A deep learning method is proposed to perform the associated optimization with reasonable complexity. Results demonstrate that the obtained sum-rates are very close to the ones obtained with full-CSI optimal but complex solutions. Finally, the proposed solution allows to greatly increase the spectral efficiency of the system when compared to existing techniques, as minimal CSI feedback is required.

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。

↑