Abstract
A method for eliminating the received signal amplitude and relative phase (RSARP) reporting errors in the radiated two-stage (RTS) multiple-input multiple-output (MIMO) over the air (OTA) tests is proposed in this paper. The paper first introduced the concept of the RTS MIMO OTA test method, which is based on a first stage of multiple antennas pattern information measurement through RSARP reporting, followed by a second stage of throughput measurement using the signals generated by combining the measured antenna patterns with the selected spatial channel model. The RSARP reporting errors would be brought into the measured antenna patterns and then feed into the throughput test signals, which finally flow in the MIMO receivers and greatly affect the throughput test accuracy. The method proposed in this paper could solve this issue through eliminating the RSARP reporting errors and ensure the accuracy of the MIMO OTA performance test. Moreover, the method could simplify the RTS MIMO test procedure and reduce the measurement period.
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