Along with 4x4 DL MIMO, UXM Test Set includes support for Transmission Mode 9, which uses multiple antennas and beamforming for interference management. Built-in channel emulator includes spatial channel models, allowing developers to characterize and verify device performance under realistic conditions. Using two 20 MHz component carriers, 64 QAM downlink modulation, and 4x4 downlink MIMO techniques, 600 Mbps downlink rates are possible with two UXM wireless test sets connected in array.