Massive MIMO is considered as a promising technology to meet the explosive growth of data
demand in fifth generation systems. To develop massive MIMO systems and industry …

In this article, a novel vector network analyzer (VNA)-based ultrawideband (UWB) channel
sounder using radio-over-fiber (RoF) techniques is presented. Benefiting from the usage of …

In this study, we investigate the possible sources of measurement uncertainties with the
integration of radio over fiber solution and frequency converters in millimeterwave sounders …

An example method may include a processing system of a device having a processor
capturing, at a first position comprising a first location and a first spatial orientation of the …

We developed a portable and traceable artifact to verify the millimeter-wave-frequency
channel sounders (CSs) under static conditions. It is designed to create several multipath …

The emerging wireless applications are facing new challenges in combating frequency
congestion. As a result, the opportunistic utilization of available frequency spectrum and …

An example method may include a processing system of a base station having a processor
selecting a blank resource of a time and frequency resource grid of the base station for a …

In massive multiple-input multiple-output (MIMO) systems, the downlink transmission
performance heavily relies on accurate channel state information (CSI). Constrained by the …

This paper presents the system design, calibration, and example measurements of a novel
ultra-wideband, low-cost, real-time channel sounder. The channel sounder operates in the …

This paper presents system concept, calibration and example measurements of a novel ultra-
wideband, real-time channel sounder. The sounder operates in the frequency range from 3 …