Millimeter-Wave Propagation of 5G Wireless Access

Radio channel measurements and modeling to describe radio propagation characteristics are essential for the design and evaluation of new wireless systems. In particular, for fifth-generation (5G) and beyond 5G high-frequency radio systems in the millimeter-wave and terahertz bands, angle scanning via highly directive antennas or phased arrays is the most popular method for obtaining angular channel characteristics. This section describes the multidimensional channel sounding measurement and multipath parameter estimation techniques.