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International Journal of Antennas and Propagation
Volume 2012, Article ID 598049, 6 pages
http://dx.doi.org/10.1155/2012/598049
Research Article

Measurement-Based Analysis of Transmit Antenna Selection for In-Cabin Distributed MIMO System

1Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
2Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China
3Department of Communication Engineering, Xiamen University, Xiamen 361005, China

Received 31 August 2011; Accepted 10 October 2011

Academic Editor: Yuan Yao

Copyright © 2012 Yan Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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