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International Journal of Antennas and Propagation
Volume 2015, Article ID 150301, 7 pages
http://dx.doi.org/10.1155/2015/150301
Research Article

Novel Base Station MIMO Antennas with Enhanced Spectral Efficiencies Using Angular Reuse

1EMITE Ingeniería S.L., 30320 Fuente Álamo de Murcia, Spain
2Universidad Politécnica de Cartagena, 30202 Cartagena, Spain

Received 4 December 2014; Revised 12 May 2015; Accepted 12 May 2015

Academic Editor: Heng-Tung Hsu

Copyright © 2015 Miguel Mora-Andreu and David A. Sánchez-Hernández. 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

The true polarization diversity (TPD) technique is combined with the spatial diversity technique in novel MIMO antenna array geometries with a large number of elements. The use of a large number of elements requires some angular reuse within the array for polarization diversity. With designs compatible with existing base station antenna array configurations, the novel geometries with combining diversity schemes are shown to be able to achieve near the maximum spectral efficiencies. True polarization diversity (TPD) schemes are found to be an excellent complement to more conventional spatial diversity schemes for obtaining optimum MIMO array performance in base station antennas.