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Experimental Investigation of the Directional Outdoor-to-In-Car Propagation Channel

Författare:
Publiceringsår: 2013
Språk: Engelska
Sidor: 2532-2543
Publikation/Tidskrift/Serie: IEEE Transactions on Vehicular Technology
Volym: 62
Nummer: 6
Dokumenttyp: Artikel i tidskrift
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.

Sammanfattning

Abstract in Undetermined

The demand for wireless channel models including realistic user environments is increasing. This motivates work on more detailed models that are reasonably simple and tractable but with adequate

statistical performance. In this paper, we present an investigation of the spatial outdoor-to-in-car radio channel at 2.6 GHz. Specifically, we investigate the performance of a multiple antenna smartphone mockup in the hand of a user. We evaluate and utilize a composite channel approach to combine measured antenna radiation patterns with an estimated spectral representation of the multipath channel outside and inside the car in two different scenarios. The performance of the method is investigated and comparisons with direct channel measurements are performed. Statistical and directional properties of the outdoorto-in-car channel are presented and analyzed. It is found that the composite method, despite nearfield

problems when estimating plane-wave channel parameters in a very narrow environment, constitutes a tool that provides reasonably viable statistical results. In addition, we have found that the introduction of the car in the propagation environment increases scattering and eigenvalue dispersion while it decreases pairwise antenna signal correlation. These statistical properties are found to slightly increase the possible diversity and the spatial multiplexing gains of multiple antenna terminals when located inside cars. This

positive effect, however, is small compared to the negative effect of car penetration loss.

Nyckelord

  • Electrical Engineering, Electronic Engineering, Information Engineering
  • Mobile communication
  • channel models
  • propagation measurement
  • user phantom
  • multiple-input multiple-output (MIMO)
  • vehicular channel
  • direction of arrival estimation

Övriga

Published
  • Radio Systems-lup-obsolete
  • ISSN: 1939-9359

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