Editorial

MIMO Over-The-Air Research, Development, and Testing

Table 1

Comparison of candidate methodologies.

MethodProsConsFuture work

A1 MultiprobeConceptually simpleLimited flexibility Cost per probeCalibration and validation
A2 Ring of probesArbitrarily flexibleCost 3D very costlyCalibration and validation
A3 Two-stageLow cost including 3DRequires DUT test modeSelf-interference solution
A4 Two-channelVery low costNo temporal and limited spatial controlCorrelation with other methods
A5 Spatial emulatorLow costLimitations in channel modelsCalibration and correlation with other methods
R1 ReverbVery low costLimited temporal and no spatial controlCalibration and evaluation of spatial aspects
R2 Reverb plus faderLow costNo spatial controlCalibration and evaluation of spatial aspects