Aircraft seems to be the last isolated island where the wireless access is still not available. In this paper, we consider the distributed\r\nmultiple-input multiple-output (D-MIMO) system application based on measurements in aircraft cabin. The channel response\r\nmatrices of in-cabin D-MIMO system are collected by using a wideband channel sounder. Channel capacities with optimum\r\ntransmit antenna selections (TASs) are calculated from the measured data at different receiver positions. Then the optimum\r\ncapacity results are compared to those without selection in different transmit SNR. It is shown that the TAS can lead obvious\r\ncapacity gain, especially in the front and back of cabin. The capacity gain represents a decreasing trend with the transmit SNR\r\nincreasing. The optimal transmit antenna subset is closely related to the transmit SNR. With the SNR increasing, more transmit\r\nantennas will be chosen for higher performance. The subset of those transmit antennas near the receiver is a reasonable choice in\r\npractical application of D-MIMO system.
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