Signal power distribution in the azimuth, elevation and time delay domains in urban environments for various elevations of base station antenna

Nathan Blaunstein, Martin Toeltsch, Juha Laurila, Ernst Bonek, Dmitry Katz, Pertti Vainikainen, Nissim Tsouri, Kimmo Kalliola, Heikki Laitinen

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

We investigate signal power distribution in the azimuth-of-arrival, elevation-of-arrival and time-of-arrival domains for various positions of the base station antenna located below the rooftop as well as at rooftop level. This article is based on a multiparametric stochastic model we introduced in 2004, as combination of a statistical part, describing an array of buildings randomly distributed at the terrain, and a waveguide model, describing a grid of straight streets with buildings along them. Joint signal power distributions in azimuth-time delay and elevation-azimuth planes are obtained and compared to high-resolution 3-D measurements carried out in downtown Helsinki. A good agreement between theoretical predictions and the measurements is obtained basically, and also regarding the wave-guiding effect and antenna height dependencies. A satisfactory physical explanation, which accounts for the character of the specific building topography, the height and tilt of the antennas, is found. Finally, we present a numerical experiment of changing the base station antenna height, its directivity, and tilt. By this we show that the proposed stochastic approach allows to predict and control a-priori main parameters of smart antenna based only on knowledge of specific features of built-up terrain.

Original languageEnglish
Pages (from-to)2902-2916
Number of pages15
JournalIEEE Transactions on Antennas and Propagation
Volume54
Issue number10
DOIs
StatePublished - 1 Oct 2006

Keywords

  • Azimuth
  • Channel
  • Comparison with measurements
  • Delay
  • Elevation
  • Model
  • Propagation
  • Smart antennas
  • Stochastic model
  • Waveguide

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Signal power distribution in the azimuth, elevation and time delay domains in urban environments for various elevations of base station antenna'. Together they form a unique fingerprint.

Cite this