论文部分内容阅读
为了研究在各向同性散射和非各向同性散射中信道的传输特性,建立一种椭圆散射信道模型,同时在发射端和接收端设置均匀线性阵列以研究多输入多输出系统性能.假设波达信号到达角服从Von Mises分布,在定量给出到达角和发射角关系的条件下分析了参考模型的相关函数和信道容量.另外,在精确多普勒扩展法的基础上提出一种改进的参数计算方法,在参考模型的基础上得到了仿真模型,模型的数值结果阐明了Von Mises分布下信道的相关特性.理论分析和仿真结果表明,信道仿真器和参考模型有近乎一致的时间相关性,同时该模型的提出也拓展了空间统计信道模型的研究.
In order to study the channel transmission characteristics in isotropic scattering and non-isotropic scattering, an elliptical scattering channel model is established, and a uniform linear array is set up at the transmitting end and the receiving end to study the performance of MIMO system. The signal arrival angle obeys the Von Mises distribution, and the correlative function and channel capacity of the reference model are analyzed under the condition that the relationship between the arrival angle and the emission angle is quantitatively given. In addition, an improved parameter is proposed based on the accurate Doppler spread method The simulation model is obtained based on the reference model, and the numerical results of the model illustrate the channel characteristics under the Von Mises distribution.Theoretical analysis and simulation results show that the channel simulator and the reference model have almost the same time correlation, At the same time, the proposed model also expands the study of spatial statistical channel model.