Estimation of Spherical Wave Coefficients from 3D Positioner Channel Measurements

Research output: Contribution to journalLetter


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 for this, using a 3D 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.


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Electrical Engineering, Electronic Engineering, Information Engineering


  • Channel measurements, spherical wave expansions, probe correction, 3D positioner
Original languageEnglish
Pages (from-to)608-611
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 2012
Publication categoryResearch