Performance Analysis of Reflection Paths for Millimeter Wavelength Systems

The work presented here aims at providing deeper knowledge on the behavior of non-line-of-sight (NLOS) links that particularly benefit from a specular reflection for fixed wired access systems (FWA) operating in the 40 GHz bands. For comparison purposes, the performance of the proposed NLOS link has been assessed in contrast with that of an unobstructed line-of sight (LOS) link. Both of the measured links were carried out in urban environments in order to explore the statistical propagation effects in such areas. Both links attain a dominant signal and hence are modeled using a Rician envelope distribution. Comparisons considered in terms of signal variations, cumulative curves and Rician K-factor have indicated the potential usefulness of the received reflected signals.