Abstract
This paper discusses over the air (OTA) testing for multiple input
multiple output (MIMO) capable terminals with emphasis on wideband
MIMO channel capacity analysis in a multi-probe anechoic chamber setup.
In the literature, the spatial correlation simulation accuracy at the
receiver (Rx) side has been used to determine the test area size for
a limited number of probes. However, it is desirable that the test
area size is defined in terms of data rate deviation of the simulated
channel in the laboratory from that of the target channel model. This
paper reports MIMO capacity analysis results for wideband spatio-temporal
channel models, with emphasis on the impact of spatial correlation
at the transmit (Tx) side, the channel model, and the spatial correlation
at the Rx side on the capacity simulation accuracy. Simulation results
show that the number of probes is irrelevant to capacity simulation
accuracy when the spatial correlation at the Tx side is in the high
region (e.g. $\rho>0.7$). Furthermore, when correlation at the Tx
side is low, the spatial correlation accuracy is less critical with
small correlation at the Rx side. The simulation results are further
supported by measurements in a practical multi-probe anechoic chamber
setup. The capacity simulation accuracy is shown to be a valid
measure to determine the test area size.
Original language | English |
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Journal | I E E E Transactions on Vehicular Technology |
Volume | 65 |
Issue number | 5 |
Pages (from-to) | 2861 - 2871 |
Number of pages | 11 |
ISSN | 0018-9545 |
DOIs | |
Publication status | Published - May 2016 |