Effects of Directional Antennas at the Base Station on the Doppler Spectrum

被引：32

作者：

Petrus, Paul ^{[1
]}

Reed, Jeffrey H. ^{[1
]}

Rappaport, Theodore S. ^{[1
]}

机构：

[1] Virginia Polytech Inst & State Univ, Bradley Dept Elect Engn, Mobile & Portable Radio Res Grp, Blacksburg, VA 24061 USA

来源：

IEEE COMMUNICATIONS LETTERS | 1997年 / 1卷 / 02期

关键词：

D O I：

10.1109/4234.559358

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this letter we analyze the effect of directional antennas at the base station on the Doppler spectrum. It is well known that the Doppler spectrum is dependent on the probability density function (pdf) of the angle-of-arrival (AOA) of the multipath components at the mobile unit and the direction of the motion of the mobile. The Doppler spectrum is U-shaped as noted by Clark [1], when the pdf of the AOA of the multipath components at the mobile is uniform. Here, however, we study the Doppler fading at the base station and assume that the scatterers are uniformly located around the mobile within a circle and derive the pdf of the AOA of the multipath components at the mobile when directional antennas are used at the base station.

引用

页码：40 / 42

页数：3