元媛,何睿斯,艾渤,等. 毫米波时变信道仿真中实现空间一致性的方法研究[J]. 电波科学学报,2021,36(3):386-395. DOI: 10.12265/j.cjors.2020145
      引用本文: 元媛,何睿斯,艾渤,等. 毫米波时变信道仿真中实现空间一致性的方法研究[J]. 电波科学学报,2021,36(3):386-395. DOI: 10.12265/j.cjors.2020145
      YUAN Y, HE R S, AI B, et al. Research on the method of spatial consistency simulation for millimeter wave time-varying channels[J]. Chinese journal of radio science,2021,36(3):386-395. (in Chinese) DOI: 10.12265/j.cjors.2020145
      Citation: YUAN Y, HE R S, AI B, et al. Research on the method of spatial consistency simulation for millimeter wave time-varying channels[J]. Chinese journal of radio science,2021,36(3):386-395. (in Chinese) DOI: 10.12265/j.cjors.2020145

      毫米波时变信道仿真中实现空间一致性的方法研究

      Research on the method of spatial consistency simulation for millimeter wave time-varying channels

      • 摘要: 为满足终端移动场景下5G毫米波信道建模及仿真的需求,开展了毫米波时变信道仿真中实现空间一致性的研究. 基于通用的5G毫米波信道模型开展了仿真和分析,将终端移动轨迹进行分割,确定连续仿真窗口间大尺度参数的相关性. 同时,引入马尔可夫链实现窗口间多径簇数目的动态演化. 对于窗口内信道小尺度参数,基于多径的几何分布结构实现对其状态的连续更新. 最后,通过多径簇数目的自相关系数以及时延角度功率谱衡量信道仿真时空间一致性仿真重现的准确性. 结果表明:所提出的仿真方法实现了信道连续统计窗口间参数的平滑演进,从而准确刻画了5G毫米波信道的空间一致性. 本文的相关工作实现了毫米波时变信道的准确仿真.

         

        Abstract: In order to satisfy the demand of modeling and simulation of 5G millimeter wave mobile channels, this paper investigates the method of spatial consistency simulation for millimeter wave time-varying channels. Based on the general 5G millimeter wave channel model, the simulation and analysis are carried out, and the terminal moving track is segmented to determine the correlation of large-scale channel parameters between continuous simulation segments. At the same time, the Markov chain is introduced to realize the dynamic evolution of the number of multipath clusters between different segments. For the small-scale channel parameters in the segment, the state of the channel is updated continuously based on the geometric distribution structure of multipath. Finally, the accuracy of spatial consistency simulation is evaluated by using the autocorrelation coefficient of the number of multipath clusters and the delay-power-angle spectrum. The results show that the proposed simulation method realizes the smooth evolution of the parameters between continuous statistical segments of channel, thus it can accurately characterize the spatial consistency of 5G millimeter wave channels. The related work of this paper realizes the accurate simulation of millimeter wave time-varying channels.

         

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