Transmission characteristics of 28 GHz NLOS paths

Non-line-of-sight "bounce" links take advantage of a single reflection from building walls or terrain features to provide coverage in shadowed regions. In this paper, we address the utility of 28 GHz bounce paths for practical communications channels. While the paths provide sufficient received signal strength, the pulse stretching and other effects caused by diffuse scattering would be expected to cause significant dispersion and thus intersymbol interference (ISI). It should be possible to minimize the ISI with a properly designed equalizer, but the equalizer would be more complicated than one designed to cope with a small number of specularly reflected signal components.