Antenna evaluation with spatial channel models: How standardized channel models are utilized for over-the-air testing

Spatial channel models, including SCM, SCME, Winner I & II, and some ITU models were specifically developed to evaluate MIMO performance and compare MIMO techniques and algorithms. These models were developed for evaluation at the system-level using system-level simulations. However, for the purpose of evaluating specific antennas for MIMO performance in an over-the-air (OTA) measurement, a single link-level model is preferred so that a single specific spatial and temporal characteristic can be generated and provided to the device-under-test (DuT) for evaluation. This contribution looks at the use of the dual polarized spatial channel model, specifying the polarization coupling for a link level implementation, and how these assumptions impact the evaluation of antenna performance.