Performance enhancement by beam tilting in SD transmission utilizing two-ray fading

Abstract

A method is proposed for enhancing the transmission performance in a spatial division transmission system that utilizes the fading characteristics of two-ray ground reflection propagation. The method is tilting the elevation angle of antenna beams purposely towards out of the communicating peer. Using ray-tracing simulation, it is shown that the performance of the system is significantly improved when high-gain antennas with narrow beamwidth are used.