Estimation of Spherical Wave Coefficients From 3-D Positioner Channel Measurements

Author

Bernland, Anders ; Gustafsson, Mats ; Gustafson, Carl ; Tufvesson, Fredrik

Author_Institution

Dept. of Electr. & Inf. Technol., Lund Univ., Lund, Sweden

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

608

Lastpage

611

Abstract

Electromagnetic vector spherical waves have been used recently to model antenna-channel interaction and the available degrees of freedom in multiple-input-multiple-output (MIMO) systems. However, there are no previous accounts of a method to estimate spherical wave coefficients from channel measurements. One approach for this, using a 3-D positioner, is presented and analyzed in this letter. Measurement results are presented and discussed. It is concluded that estimates based on randomly positioned measurements within a volume are less sensitive to noise than those based only on measurements on the surface.

Keywords

MIMO systems; receiving antennas; transmitting antennas; wireless channels; 3D positioner channel measurements; antenna-channel interaction; electromagnetic vector spherical waves; multiple-input-multiple-output systems; spherical wave coefficients; Antenna measurements; Dipole antennas; Position measurement; Receiving antennas; Three dimensional displays; 3-D positioner; channel measurements; probe correction; spherical wave expansions;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2202870

Filename

6212304