This chapter is dedicated to radio channel measurement and modelling techniques for beyond 4G networks, in particular: • new measurement techniques not only targeting radio channels, but also material properties in new frequency bands (Section 9.1), • improved physical models, cowering full-wave as well as ray-based methods, with a specific sub-section dealing with diffuse scattering (DS) and c...

An Ultra-Wideband (UWB) real-time channel sounder architecture is described which allows the measurement of the timevariant radio propagation channel in the extreme wide band ranging from nearly zero to 5 GHz. Synchronous multi-channel operation is supported by excellent timing stability and low power consumption of miniature size LTCC modules comprising custom integrated SiGe HBT circuits. Thi...

Direct and non-invasive measurement of the pressure distribution in test sections of a micro-channel is a challenging, if not an impossible, task. Here, we present an analytical method for extracting the pressure distribution in a deformable microchannel under flow. Our method is based on a measurement of the channel deflection profile as a function of applied hydrostatic pressure; this initial...

When capturing power measurements for processing with side-channel analysis, there are many options with regards to both how the measurement is taken, and also how that measurement is digitized. This work concentrates on a new technique which measures the current through a decoupling capacitor, with a probe that can easily be built in any electronics lab. In addition an open-source digitizer bo...

This paper describes a measurement system enabling the complete real-time characterization of the wideband radio channel. The system is based on a wideband radio channel sounder and a spherical antenna array, and it aims to describe the three-dimensional (3-D) spatial radio channel seen by the mobile terminal, including polarization. This information is highly valuable in designing antennas for...

AKING RELIABLE MEASUREMENTS ON fTE-quency-division multiplexed (FDM) baseband signals presents a two-part problem. First, the frequency at which the measurement is to be made must be determined. Then second, the measurement must be made with high accuracy in the presence of numerous interfering signals. At first sight the choice of a measurement frequency may seem to be a trivial problem, but f...

Ð In this paper a new channel sounding concept for double-directional and time-delay resolved channel measurements is proposed. It is based on the RUSK ATM vector channel sounder with a uniform linear array at the receiver. Using a switched multibeam antenna instead of an omni-directional antenna at the transmitter site the measurement device became a MIMO system. The sounder has been employed ...

In order to facilitate the deployment of wireless systems in medical environments, channel measurements at 2.4GHz band have been performed in a hospital bedroom. Based on measurements in different line-of-sight (LOS) and non-line-of-sight (NLOS) scenarios, we determine the large-scale path loss and different small-scale fading parameters. Applying the channel models in our MATLAB simulation env...