Versatile emulation of antenna correlation coefficient as MIMO OTA figure of merit using mode-stirred reverberation chambers

Mode-stirred chambers provide an excellent tool for antenna characterization and MIMO OTA compliance testing of wireless devices. Recent research has focused on making the mode-stirred chamber technique more versatile. One result of these efforts is the sample selection technique, by which a sub-set of data with specific properties is extracted from a measured set of raw data. This paper presents how to apply the sample selection technique to measurements of the correlation coefficient for MIMO OTA evaluation of wireless devices. Theoretical background and useful mathematical relations are presented. The application is verified through measurements.