基于Inverted-Parabolic分布的空间统计信道模型

发布时间：2018-11-03 13:30

【摘要】：针对在非均匀散射体分布下信号到达角度、到达时间以及多普勒效应等信道参数估计的复杂性,提出一种合理的空间信道模型,并引入几何分割法导出基于散射体Inverted-Parabolic分布的空间统计信道模型。模型能方便地估计室外宏小区和微小区移动通信环境下各种重要的空时信道参数,如AOA、TOA概率分布密度函数和多普勒功率谱以及信号的空—时相关性。数值结果与均匀散射体圆模型和高斯散射体圆模型对比表明本模型的信道参数估计结果符合理论和经验,且与实测结果吻合较好。在基站设计采用指向性天线时研究了移动台MS的多普勒效应,修正了Clarke U-shaped经典模型,阐明了天线主瓣宽度2?、空间模型参数D/R和MS移动参数影响信道参数的机理。
[Abstract]:Aiming at the complexity of channel parameter estimation such as the arrival angle, arrival time and Doppler effect, a reasonable spatial channel model is proposed. A spatial statistical channel model based on the Inverted-Parabolic distribution of scatterers is derived by geometric partitioning method. The model can easily estimate various important space-time channel parameters such as AOA,TOA probability distribution density function Doppler power spectrum and space-time correlation of signals in outdoor macro cell and micro cell mobile communication environment. The comparison of the numerical results with the uniform scatterer circle model and Gao Si scattering body circle model shows that the channel parameter estimation results of this model are in agreement with the theory and experience, and are in good agreement with the measured results. The Doppler effect of mobile station MS is studied when the directivity antenna is used in the base station design. The classical Clarke U-shaped model is modified and the mechanism of the influence of the main lobe width of the antenna, the spatial model parameter D / R and the MS mobile parameter on the channel parameters is clarified.
【作者单位】：南京信息工程大学气象探测与信息处理重点实验室;日本国立新泻大学工学部;
【基金】：国家自然科学基金资助项目(61372128) 科技部公益性行业专项基金资助项目(GYHY200906053) 江苏省科技支撑计划(工业)基金资助项目(BE2011195) 江苏省高校自然科学科学研究计划基金资助项目(08KJB510009) 教育部留学基金委启动基金资助项目(20071108) 江苏省六大高峰人才基金资助项目(2008-118) 江苏省博士后基金资助项目(2011-11-010986678)~~
【分类号】：TN92

【共引文献】