三维空间域车载阵列及其多天线系统性能

Three-dimensional massive MIMO antenna array and multi-antenna system performance in vehicular wireless communications

针对城市狭窄弯道非视距车载（V2V）移动通信传播环境,提出了一种三维（3D）空间域大规模多输入多输出（M-MIMO）天线阵列模型,此模型用三维空间假设代替传统的二维（2D）平面阵列假设,将天线模型应用于弯道车载信道模型中,推导了波达信号到达角和发射角的概率密度函数闭合表达式;研究了3D空间阵列自相关特性和天线阵列参数及散射体分布对多天线系统性能的影响.仿真结果与一些经典模型数据及测量信道相符合,表明了该模型应用的可行性;可用于描述弯曲道路V2V通信场景的信道特征,为未来进一步分析和讨论MIMO多径信道或5G M-MIMO信道特征提供了良好的理论参考.

A 3 D spherical vehicle massive multiple-input multiple-output（MIMO） antenna array model was presented for narrow curved road vehicle-to-vehicle（V2 V） non-line of sight（NLOS） mobile communication environments.A 3 D spherical assumption was used in the proposed model instead of the 2 D plane wave-front assumption in the traditional MIMO channel model.The proposed antenna model was applied to the vehicle MIMO channel model.The closed expression of the probability density functions（PDFs） of the angle of arrival（AOA） and the angle of departure（AOD） was first deduced. The influence of model parameters on the performance of V2 V communication system were analyzed. Results showed that the proposed 3 D channel model is in close agreement with previously reported results, thereby validating the feasibility for describing channel characteristics of the narrow curved road V2 V mobile communication environments. It also provides a good theoretical reference for further analysis and discussion of the MIMO multi-path channel or 5 G M-MIMO channel characteristics.