Effects of directional antennas at the base station on the Doppler spectrum
- 1 March 1997
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Communications Letters
- Vol. 1 (2) , 40-42
- https://doi.org/10.1109/4234.559358
Abstract
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, 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.Keywords
This publication has 2 references indexed in Scilit:
- A geometrically based model for line-of-sight multipath radio channelsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Analytical results for capacity improvements in CDMAIEEE Transactions on Vehicular Technology, 1994