摘要
针对第五代(5G)宏蜂窝移动对移动(M2M)通信场景需要高效率的信号传输模型,提出一种三维(3D)圆柱多输入多输出(MIMO)信道,反映分布区域宏蜂窝传播环境,其中三维圆柱作为信号传输中的干扰对象。接收端(Rx)位于圆柱模型的中心点,发射端(Tx)位于散射区域之外任意位置。接收信号由视距(LoS)传播分量的总和以及由不同物体反射的非视距(NLoS)传播分量组成,该模型能够充分适应各种5G无线通信场景。此外,本文结合莱斯衰落信道、均匀分布、高斯分布、拉普拉斯分布、冯米赛斯分布研究统计信道传播特性,即发射端和接收端在不同的运动方向和运动时间的空间互相关函数(CCF)、时间自相关函数(ACF)和多普勒功率谱密度(PSD)。发射端和接收端在不同时刻的传播特性数值的Matlab分析结果与仿真结果很好地拟合,证明了所提出的三维模型对于真实的5G宏蜂窝移动通信信道是切实可行的。
Aiming at the fifth-generation(5G)macro-cell Mobile-to-Mobile(M2M)communication scenario that requires an efficient signal transmission model,a three-dimensional(3D)cylindrical Multiple-Input Multiple-Output(MIMO)channel is proposed.It reflects the macro-cell propagation environment in the distribution area,and the three-dimensional cylinder is the object of interference in signal transmission.The receiver(Rx)is located at the center point of the cylindrical model,and the transmitter(Tx)is located anywhere outside the scattering area.The received signal consists of the sum of Line-of-Sight(LoS)propagation components and Non-Line-of-Sight(NLoS)propagation components reflected by different objects,making the model fully adaptable to various 5G wireless communication scenarios.In addition,this paper combines the Rice fading channel,uniform distribution,Gaussian distribution,Laplace distribution,and von Mises distribution to study the statistical channel propagation characteristics,that is,the transmitter and the receiver in different directions of motion and spatial Cross-Correlation Functions(CCFs),temporal Auto-Correlation Functions(ACFs),and Doppler Power Spectral Density(PSD)of motion time.The Matlab analysis results of the transmission characteristics of the transmitter and the receiver at different time fit well with the simulation results,proving that the proposed three-dimensional model is feasible for a real 5G macrocellular mobile communication channel.
作者
周杰
刘少云
薛玉洁
周文轩
ZHOU Jie;LIU Shaoyun;XUE Yujie;ZHOU Wenxuan(College of Electronic&Information Engineering,Nanjing University of Information Science and Technology,Nanjing Jiangsu 210044,China)
出处
《太赫兹科学与电子信息学报》
北大核心
2020年第5期780-785,共6页
Journal of Terahertz Science and Electronic Information Technology
基金
国家自然科学基金面上项目资助(61771248)
江苏省信息与通信工程优势学科建设项目资助(61971167)。
关键词
第五代(5G)
宏蜂窝
传播特性
相关函数
功率谱密度
the fifth-generation(5G)
macro-cell
propagation characteristics
correlation function
Power Spectral Density
