Different channel sounders are reported in the literature to measure the multiple-input–multiple-output (MIMO) wireless channel, most of them being dedicated systems. In this paper, a MIMO channel sounder that is based on two network analyzers is presented. The measurement process is totally controlled by a PC via a wireless local area network (WLAN), a local area network (LAN), and a general-purpose interface bus, and they are synchronized by using two Global Positioning Systems (GPSs). The system is restricted to static propagation environments. An advantage of this system is its configurability, thanks to which it is not wireless system dependent. Last, initial measurements in a laboratory of a university at 900 MHz for a 4 $times$ 4 MIMO system are also presented.
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机译：文献中报道了不同的通道探测仪，以测量多输入多输出（MIMO）无线通道，其中大多数是专用系统。本文提出了一种基于两个网络分析仪的MIMO信道探测仪。测量过程完全由PC经由无线局域网（WLAN），局域网（LAN）和通用接口总线控制，并且它们通过使用两个全球定位系统（GPS）进行同步。该系统仅限于静态传播环境。该系统的一个优点是它的可配置性，因此它不依赖于无线系统。最后，还介绍了大学实验室在900 MHz下对4 x 4 MIMO系统的初始测量结果。
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