多用户大规模多天线系统无线信道测量与衰落相关性研究

项目名称： 多用户大规模多天线系统无线信道测量与衰落相关性研究

项目编号： No.61471027

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 刘留

作者单位： 北京交通大学

项目金额： 84万元

中文摘要： 基站端配置大量天线构成的大规模多天线系统，可以进一步挖掘空间域增益，大幅度提升无线通信系统传输容量和功率效率。从理论上看，大规模多天线系统获得空间域增益的前提条件是传播环境中的各子信道满足正交条件。但是，现实的客观物理信道由于各种原因，可能存在一定的衰落相关性，不能够满足子信道正交的条件。因此，本课题拟选择两个频段、利用三种天线、在四个场景开展多用户大规模多天线系统信道测量，提取不同典型场景Massive MIMO 信道大尺度和小尺度衰落信道衰落参数特征，分析路损指数、阴影衰落、信道包络系数、时间色散、空间色散等信道参数的衰落相关性，研究信道相关衰落特征对大规模多天线系统空间自由度、条件数、信道可达和速率等参数的影响。本课题的研究成果，可用于大规模多天线通信系统的链路级仿真和样机试验，为大规模多天线通信系统标准制定提供理论基础和技术支撑。

中文关键词： 大规模多天线系统；信道测量；衰落相关性

英文摘要： Massive MIMO is a new technique that potentially can offer large network capacities and improve the power efficiency of the wireless network, where the base stations are equipped with a large number of antennas. This technique can obtain higher spatial gain. In theory, the orthogonality between channel vectors associated with distinct terminals is the primary condition in Massive MIMO. However, the realistic propagation environment often does not satisfy this orthogonal requirement. For this reason, this research project is aim to extract the large and small scale correlated fading channel parameters in four propagation environments using three types of antenna arrays. The channel measurements will be conducted at two frequency bands. These correlated fading channel parameters, including path loss exponent, shadowing effect, channel envelope coefficient, time dispersion and space dispersion will be studied based on the measurement data. Meanwhile, the influence of the correlated fading effect on the degree of freedom, condition number, and channel achievable sum rate of Massive MIMO systems will be analyzed. These results of the project can be used in the link simulation and prototype verification, which can provide the theory and technological support for Massive MIMO.

英文关键词： Massive MIMO;channel measurement;correlated fading properties