Title :
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
fDate :
7/4/1905 12:00:00 AM
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;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2202870
