OVER-THE-AIR TESTING OF WIRELESS DEVICES USING LOG FILES

摘要

An over-the-air test system for wireless devices uses log files to simulate realistic time-varying channel conditions and provides channel state information to enable dynamic adaptation to current channel conditions. A signal transmission device transmits test signals to the device under test via a channel emulator. The channel emulator causes the test signals to exhibit channel conditions which vary over time. An over-the-air test chamber in which the device under test is disposed includes multiple antennas which are driven with the test signals from the channel emulator. Channel state information is sent from the device under test to the signal transmission device. The signal transmission device responds to the channel state information by adapting to current channel conditions.

主权项

1. Apparatus for testing a wireless device with at least one antenna comprising:
a signal transmission device which transmits test signals having a spatial rank; a channel emulator which operates on the test signals from the signal transmission device to cause the test signals to exhibit channel conditions which vary over time; and an over-the-air test chamber including multiple antennas which are driven with the test signals from the channel emulator which exhibit channel conditions, the device under test being disposed in the over-the-air test chamber and sending channel state information to the signal transmission device, the signal transmission device responding to the channel state information by adapting to current channel conditions.