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Estimation of Spherical Wave Coefficients from 3D Positioner Channel Measurements

Publiceringsår: 2012
Språk: Engelska
Sidor: 11
Publikation/Tidskrift/Serie: Technical Report LUTEDX/(TEAT-7215)/1-11/(2012)
Dokumenttyp: Rapport
Ytterligare information: Published version:IEEE Antennas and Wireless Propagation Letters, Vol. 11, pp. 608-611, 2012.


Electromagnetic vector spherical waves have been used recently to model antenna channel interaction and the available degrees of freedom in MIMO systems. However, there are no previous accounts of a method to estimate spherical wave coefficients from channel measurements. One approach, using a 3D positioner, is presented in this letter, both in theory and practice.
Measurement results are presented and discussed. One conclusion is that using randomly positioned measurements within a volume is less sensitive to noise than using only measurements on the surface.



  • Electrical Engineering, Electronic Engineering, Information Engineering
  • channel measurements
  • 3D positioner
  • spherical wave expansion
  • probe correction


  • Swedish Foundation for Strategic Research (SSF)
  • EIT_HSWC:Antenna MIMO antennas and channels
  • Radio Systems
  • Electromagnetic theory

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