Wireless communications systems and methods related to over-the-air (OTA) channel equalization in millimeter wave mmWave) testing are provided. An apparatus transmits, to a wireless communication device positioned within an over-the-air (OTA) space, one or more reference signals. The apparatus receives, from the wireless communication device, channel state information in response to the one or more reference signals. The apparatus determines a channel estimate for the OTA space based on the received channel state information. The apparatus transmits, to the wireless communication device, a communication signal based on a reference channel and the channel estimate for the OTA space.