椭圆空间统计信道建模及其MIMO多天线系统性能

发布时间：2018-02-20 16:14

本文关键词： 统计信道模型到达角度到达时间空间衰落相关函数信道容量　出处：《解放军理工大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

【摘要】：针对室内外移动通信环境,提出一个椭圆二维空间统计信道模型,该模型假设散射体均匀分布在椭圆内,移动台和基站分别位于椭圆的2个焦点处,并且在移动台分别设置了四单元的线性阵列(ULA)和圆环阵列(UCA)。在椭圆2D空间统计信道模型的基础上分析了多输入多输出系统(MIMO)的多天线系统性能,该模型不仅描述了波达信号在空间和时间上的统计分布特性,推导出了波达信号的到达角度(AOA)和到达时间(TOA)概率密度函数的解析表达式,同时也研究了MIMO多天线系统的空间衰落相关函数和信道容量。散射体均匀分布时,本模型的数值结果阐述了传输时延对信道参数的影响,与已经存在的空间统计信道模型比较,本模型适合室内外移动通信环境,为评估MIMO多天线系统与无线通信系统仿真提供了有力的工具。
[Abstract]:For indoor mobile communication environment, put forward a two-dimensional elliptic space statistical channel model, the model assumes uniform distribution of scatterers in the elliptic, 2 focal point of the mobile station and the base station are located in the ellipse, and the mobile stations were set up in a linear array of four elements (ULA) and circular array (UCA). In the elliptic 2D space statistical channel model of multi input multi output system (MIMO) performance of multi antenna system, the model not only describes the statistics of the temporal and spatial distribution characteristics of arrival signal, deduces the signal arrival angle of arrival (AOA) and time of arrival (TOA) analytical expressions of probability density function at the same time, also studied the MIMO multi antenna system spatial fading correlation function and channel capacity. The scattering of uniform distribution, numerical results of the present model describes the influence of the transmission delay of the channel parameters, and already exists Compared with the spatial statistical channel model, this model is suitable for indoor and outdoor mobile communication environment, and provides a powerful tool for evaluating the simulation of MIMO multi antenna system and wireless communication system.

【作者单位】：南京信息工程大学江苏省气象探测与信息处理重点实验室;
【基金】：国家自然科学基金资助项目(61471153) 江苏省高校自然科学基金资助项目(14KJA510001)
【分类号】：TN919.3

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