基于3GPP TR38.901信道模型的时变信道建模与仿真

Time-Varying Channel Modeling and Simulation Based on 3GPP TR38. 901 Channel Model

在实际通信环境中,用户端及周围的障碍物往往处在移动状态下,因此通信环境常建模为时变信道.为了充分研究当下第5代移动通信系统中用户移动性对信道特性的影响,对基于3GPP TR38.901信道模型的非平稳时变信道模型和平稳时变信道模型进行了仿真分析.仿真结果包含了2种模型的功率延时谱、信道冲激响应、信道时频相关传递函数、时延扩展、角度扩展和时间自相关曲线等.充分研究和仿真了TR38.901提出的2种时变模型,并进行了详尽地对比分析.

In the actual communication environment,the user terminal and surrounding obstacles are often in a mobile state,so the communication environment is often modeled as a time-varying channel. In order to fully study the impact of user mobility on channel characteristics in the current the fifth generation of mobile communications system,a simulation is performed on the non-stationary time-varying channel model and the stationary time-varying channel model based on the 3GPP TR38. 901 channel model. The simulations include the power delay spectrum,channel impulse response,channel time-frequency correlation transfer function,delay spread,angle spread and time autocorrelation curves of the two models. Two timevarying models proposed by TR 38. 901 are fully studied and simulated,and a detailed comparative analysis is made.