1. A method for using a multiple-input-multiple-output over-the-air test system design and analysis tool that is implemented on computing equipment in identifying over-the-air test system settings to use when emulating a channel model with an over-the-air test system, the method comprising: with the computing equipment, obtaining channel model parameters for the channel model, wherein the channel model parameters comprise attributes of a plurality of signal clusters; with the computing equipment, obtaining device-under-test parameters for a device under test to be tested using the over-the-air test system; and with the computing equipment, producing the over-the-air test system settings based on the obtained channel model parameters and the obtained device under test parameters, wherein producing the over-the-air test system settings comprises computing a theoretical spatial correlation value of the channel model and computing an over-the-air spatial correlation value of emulation of the channel model with the over-the-air test system, wherein the theoretical spatial correlation value and the over-the-air spatial correlation value each account for the plurality of signal clusters.