5G无线网络中毫米波通信的路径损耗预测模型

Path Loss Prediction Model for Millimeter Wave Communication in 5G Wireless Networks

在5G通信中,毫米波信道建模是一项尤为关键的技术。为了充分了解毫米波的传输特征,首先在室外点对点网络和车联网环境下分别测量了60GHz和73GHz的信道。然后,通过在自由空间模型和斯坦福大学信道模型中引入校正因子,建立能够准确预测60GHz毫米波路径损耗的改进模型。其次,将在发射器和接收器之间来自多个天线指向方向的信号进行合并,提出了73 GHz毫米波波束合并的路径损耗模型。实验结果表明,本文的路径损耗预测模型能够较准确地描述60GHz和73GHz毫米波的路径损耗情况。

In 5G communications,millimeter wave channel modeling is a particularly critical technology.In order to fully understand the transmission characteristics of millimeter waves,this paper first measured 60GHz and 73GHz channels in outdoor point-to-point network and vehicular networks environment respectively.Then,by introducing correction factors into the free space model and Stanford channel model,this paper established an improved model that can accurately predict the path loss of 60Ghz millimeter wave.Secondly,the signals from multiple antenna pointing directions are combined between the transmitter and receiver,and a path loss model for 73 GHz millimeter wave beam combining is proposed.Experimental results showed that the path loss prediction model proposed in this paper can accurately predict the path loss of 60GHz and 73GHz millimeter waves.