MIMO OTA Testing for 5G User Equipment: Standardization Progress and Challenges

Standardized over-the-air (OTA) test methodologies have been developed to evaluate and verify the performance of multiple-input multiple-output (MIMO) receivers of LTE and NR user equipment. In this paper, the MIMO OTA test methodologies and recent standardization progress in 3GPP are reviewed. The work plan in 3GPP and the potential challenges of 5G MIMO OTA testing are discussed. We also demonstrate the channel model validation measurement results in our multi-probe anechoic chamber (MPAC), which validated the good channel model implementation in the test zone.