Effects of polarization, antenna directivity, and room size ondelay spread in LOS indoor radio channel

摘要

This paper presents results of experiment and computer simulationnbased on a three-dimensional (3-D) ray-tracing method for variousndirectional polarized antennas, where the effects of polarization,nantenna directivity, and room size on delay spread (measured at 94 GHz)nare investigated in the line-of-sight (LOS) indoor channel. Thesenresults indicate that the delay spread can be reduced significantly bynthe directional circularly polarized antenna. It is also found that thendelay spread increases almost proportionally with the square root of thenroom floor area