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Several test methodologies have been proposed to evaluate the over-the-air (OTA) performance of multiple-input multiple-output (MIMO)-enabled LTE devices. Reproducible data throughput measurements as a function of downlink power are very time consuming for faded radio channels. Thus only a limited number of spatial channel parameters can be evaluated characterizing the OTA performance of a user equipment...
Conformance tests for SISO OTA were introduced in recent years but so far nothing exists for the newly introduced MIMO devices. Unlike SISO systems where multipath fading is something to be overcome, MIMO takes advantage of fading to identify and use orthogonal communication channels to enable simultaneous transmission of multiple streams of data. A consequence of this is that the fading channel characteristics...
In this work, we provide a new throughput-based antenna selection criterion that considers the entire system design rather than only the channel state information. The performance evaluation was carried out in a measurement campaign in a common outdoor urban scenario. We present our results in terms of physical layer throughput over transmit power. In addition to diversity gains, we also see gains...
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