Effect of directional antennas at both ends of the link on fading statistics

Abstract

This paper presents the fading statistics for macrocell mobile environment while directional antennas are used at both ends of the radio link. The probability density function (PDF) of angle of arrival (AoA) of multipath signals is used to investigate fading statistics with assumption that mobile station (MS) is surrounded by uniform and Gaussian distribution of scatterers. The obtained statistics of the AoA are used to observe the effect of directional antennas on the Level Crossing Rate (LCR), Average Fade Duration (AFD) and Autocovariance of the received envelopes for macrocellular environment. Results are shown for various scenarios and the impacts of the beamwidth of directional antennas as well as the motion of mobile on the above mentioned characteristics are thoroughly investigated.