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无线信道作为移动通信传输媒介,所有信息包含其中。要想充分利用频谱资源并且使传输信息的质量和容量最大化,信道特性应被清楚了解。同时,研究移动通信4G技术在复杂的无线传播环境中性能,离不开MIMO信道模型,因此对MIMO信道模型的分析十分必要。简要介绍了MIMO信道模型分类,并着重研究了基于几何分布统计信道模型的基础模型—SCM信道模型。最后对多普勒、时延扩展以及角度扩展仿真分析,验证了SCM信道建模的正确性。
Wireless channel as a mobile communication medium, all the information included. Channel characteristics should be clearly understood in order to fully utilize the spectrum resources and maximize the quality and capacity of the information transmitted. At the same time, it is very necessary to analyze the MIMO channel model to study the performance of 4G mobile communication technology in complex wireless propagation environment, which can not be separated from the MIMO channel model. The classification of MIMO channel model is briefly introduced, and the basic model-SCM channel model based on geometric distribution statistical channel model is emphatically studied. Finally, the simulation analysis of Doppler, delay spread and angle spread verifies the correctness of SCM channel modeling.