TEMPORAL VARIATIONS OF THE INDOOR WIRELESS MILLIMETER-WAVE CHANNEL

This paper reports experiments conducted near 30 GHz to characterize h uman-induced variations of an indoor radio channel for which both term inals are stationary. The dependence of envelope characteristics on va rious parameters (degree and localization of movement, terminal config uration, and spatial short-range fading level) is examined. In particu lar, it is found that the received envelopes may be considered realiza tions of only locally stationary processes, even when movement in the propagation environment is homogeneous. The results presented may be u sed in the design of broad band wireless LAN's and serve as a basis fo r the development of a theoretical model capable of predicting channel temporal variation characteristics under a variety of conditions.