Capacity and robustness of single- and dual-polarized mimo systems in office and industrial indoor environments l.r. Nair.

Content Provider	CiteSeerX
Author	Maharaj, B. T. Wallace, J. W.
Abstract	Abstract — A study on the suitability of multiple-input multipleoutput (MIMO) architectures employing either single- or dualpolarization antennas is presented, with the purpose of identifying not only which architecture provides better average capacity performance, but also which is more robust for avoiding low channel rank. It is expected that systems with high robustness will be required for MIMO in demanding industrial applications. A measurement campaign employing dual-polarized 8x8 patch arrays at 2.4 and 5.2 GHz is analyzed, where measurements were performed in two very distinct indoor scenarios: an office building and an industrial environment. For both environments the performance of three 4x4 subsystems (dual-polarized, verticalpolarized and horizontal-polarized) are compared in terms of the average capacities attained by these systems and their eigenvalue distributions. Average capacities are found to be only marginally different, indicating little advantage of dual-polarized elements for average performance. However, an eigenvalue analysis indicates that the dual-polarized system is most robust for full-rank MIMO communications, by providing orthogonal channels with more equal gain. I.
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Subject Keyword	Industrial Indoor Environment L.r. Nair Dual-polarized Mimo System Average Capacity High Robustness Office Building Distinct Indoor Scenario Dualpolarization Antenna Low Channel Rank Average Capacity Performance Average Performance Measurement Campaign Dual-polarized Element Patch Array Multiple-input Multipleoutput Eigenvalue Distribution Dual-polarized System Little Advantage Industrial Environment Industrial Application Orthogonal Channel Equal Gain Eigenvalue Analysis Full-rank Mimo Communication
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