The Effect of Horizontal Array Orientation on MIMO Channel Capacity

In multiple-input multiple-output (MIMO) systems the horizontal orientation of a linear array has, in some situations, a large influence on the available channel capacity. In this paper we investigate the effect of horizontal array orientation on channel capacity, eigenvalue distribution and antenna complex correlation coefficient in such systems. We present channel measurements in an office corridor environment for a 6 6 MIMO system and compare the capacity results to those of a physical and non-physical model based on the measurements. The results show that under LOS conditions the channel capacity can vary significantly depending on the receiver array orientation in the horizontal plane. This work may not be copied or reproduced in whole or in part for any commercial purpose. Permission to copy in whole or in part without payment of fee is granted for nonprofit educational and research purposes provided that all such whole or partial copies include the following: a notice that such copying is by permission of Mitsubishi Electric Research Laboratories, Inc.; an acknowledgment of the authors and individual contributions to the work; and all applicable portions of the copyright notice. Copying, reproduction, or republishing for any other purpose shall require a license with payment of fee to Mitsubishi Electric Research Laboratories, Inc. All rights reserved. Copyright c ©Mitsubishi Electric Research Laboratories, Inc., 2003 201 Broadway, Cambridge, Massachusetts 02139 Publication History: 1. First printing, TR-2003-39, July 2003 The Effect of Horizontal Array Orientation on MIMO Channel Capacity Peter Almers1,2, Fredrik Tufvesson2, Peter Karlsson1 and Andreas F. Molisch2,3 1Telia Research AB, Box 94, SE-201 20 Malmö, Sweden Dept. of Electroscience, Lund University, Box 118, SE-221 00 Lund, Sweden 3Mitsubishi Electric Research Lab, 558 Central Avenue, Murray Hill, NJ 07974, USA E-mail: Peter.Almers@es.lth. se Abstract—In multiple-input multiple-output (MIMO) systems the horizontal orientation of a linear array has, in some situations, a large influence on the available channel capacity. In this paper we investigate the effect of horizontal array orientation on channel capacity, eigenvalue distribution and antenna complex correlation coefficient in such systems. We present channel measurements in an office corridor environment for a 6 × 6 MIMO system and compare the capacity results to those of a physical and non-physical model based on the measurements. The results show that under LOS conditions the channel capacity can vary significantly depending on the receiver array orientation in the horizontal plane.In multiple-input multiple-output (MIMO) systems the horizontal orientation of a linear array has, in some situations, a large influence on the available channel capacity. In this paper we investigate the effect of horizontal array orientation on channel capacity, eigenvalue distribution and antenna complex correlation coefficient in such systems. We present channel measurements in an office corridor environment for a 6 × 6 MIMO system and compare the capacity results to those of a physical and non-physical model based on the measurements. The results show that under LOS conditions the channel capacity can vary significantly depending on the receiver array orientation in the horizontal plane.