On Radiated Performance Evaluation of Massive MIMO Devices in Multiprobe Anechoic Chamber OTA Setups
Radiated testing of massive multiple input multiple output devices in fading radio channel conditions is expected to be essential in the development of the fifth generation (5G) base stations and user equipment (UE) operating at or close to the millimeter wave (mm wave) frequencies. In this paper, we present a setup upgrading the multiprobe anechoic chamber based system designed originally for 4G UE. We describe methods for mapping radio channel models onto the probe configuration and discuss the differences to the former 4G case. We also propose metrics to assess the accuracy of the test setup and find key design parameters by simulations. The results with the utilized channel models indicate that at 28 GHz, up to $16 \times 16$ planar arrays can be tested with a range length of 1 m and with at minimum eight active dual polarized probes.
IEEE Transactions on Antennas and Propagation