Abstract: A system provides OTA testing of a DUT having a DUT antenna array for forming physical beams. The system includes dual-polarized probes or probe groups, an anechoic chamber, a wireless channel emulator, and a test instrument. The dual-polarized probes or probe groups receive the physical beams formed by the DUT antenna array. The anechoic chamber houses the DUT antenna array and the probes or probe groups. The wireless channel emulator is coupled to the probes or probe groups for receiving the physical beams, and generates a calibrated OTA channel model having simulated beams corresponding to the physical beams. The calibrated OTA channel model simultaneously provides isolated wireless cable connections corresponding to the simulated beams, and emulates fading channel conditions. The test instrument, coupled to the wireless channel emulator, establishes a communications link with the DUT and evaluates performance characteristics of the DUT based on the calibrated OTA channel model.

Abstract: MIMO test systems and methods are provided that eliminate the need for a wired connection between the test system and the antenna ports of the DUT, thereby eliminating the need to open up the housing of the DUT and risk damaging or destroying it. The MIMO test systems and methods also eliminate the need for an anechoic chamber, thereby eliminating the cost and space requirements associated therewith. A suitable non-anechoic, electromagnetically-shielded chamber can be used in the test system that is much less expensive and that has a much smaller spatial footprint than a typical anechoic chamber used in MIMO test systems.