多输入多输出宽带无线信道测量系统的研制

Development of wideband MIMO channel measurement system

摘要: 设计并研制了2~15 GHz多频段,带宽为100 MHz的四发四收多输入多输出宽带无线信道测量系统,用于提取无线多输入多输出(MIMO)信道特性。介绍了室内环境在3.5 GHz频率上进行的宽带信道测量实验。测量场景包括了室内直达径(LOS)和非直达(NLOS)的典型情况,同时也考虑了不同天线间距和人员移动的影响。根据测量结果分析了信道特性并提取了信道参数。统计得出的信道参数可以用于建立离散时间信道模型,应用于仿真与验证宽带MIMO通信系统。

Abstract: A wideband wireless 4×4 multiple input multiple output (MIMO) channel measurement system is developed for characterizing MIMO channel.It is designed to work in four frequency bands from 2 GHz to 15GHz with 100MHz bandwidth.With this measurement system,initial measurements at 3. GHz for indoor propagation environment are presented.Typical indoor scenarios,such as line-of-sight (LOS) and non-line-of-sight (NLOS),are included.The influence of antenna spacing and pedestrian movement are also considered.The channel characteristic and parameters are extracted from the measurement campaign.The statistic parameters could be used to establish the discrete-time channel model and applied to the simulation and validation of wideband MIMO communication system.