Summary
International Symposium on Antennas and Propagation
2008
Session Number:3A05
Session:
Number:3A05-5
Base Station Antenna Effective Gain Based on Incoming Wave Distribution in Vertical Plane
Koshiro KITAO, Tetsuro IMAI, Yoshio ITOH,
pp.-
Publication Date:2008/10/27
Online ISSN:2188-5079
Summary:
In cellular systems, it is common to use base station (BS) antennas that have a sharp beam pattern in the vertical plane to reduce the amount of interference to neighboring cells. It is well known that the distribution of incoming waves affects the effective gain of antennas that have a directional pattern [1, 2]. In this report, we statistically evaluate the BS antenna effective gain based on the power angle profile (PAP) measured at a BS that is established on the roof of a building in an urban area. This report is structured as follows. First, we describe the statistical characteristics of the PAP in the vertical plane at a BS based on measurement results using a super-resolution method employing a linear array antenna. We also show the distribution of the angle spread (AS) and mean angle (MA) based on measurement results. We then statistically evaluate the BS antenna effective gain based on measured PAPs. Finally, we examine the application of a simple incoming wave model to the evaluation of the antenna effective gain, and verify the validity of the model by comparing the statistical characteristics of the antenna effective gain calculated using the model to the antenna effective gain calculated using the measured PAP.