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The Role of Polarization Diversity for MIMO Systems Under Rayleigh-Fading Environments

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4 Author(s)
Valenzuela-Valdes, J.F. ; Departamento de Tecnologias de la Informacion y Comunicaciones, Universidad Politecnica de Cartagena ; Garcia-Fernandez, M.A. ; Martinez-Gonzalez, A.M. ; Sanchez-Hernandez, D.

Polarization diversity techniques have not received as much attention as others due to the significant difference in mean signal level between copolarized and cross-polarized branches when one polarization is transmitted. However, multiple-input-multiple-output (MIMO) systems where the multipath fading is only partially correlated could use polarization diversity to provide a high diversity gain. Hence there is a need to fully understand the role of true polarization diversity in such systems. In this letter, progressive (true) polarization diversity performance for 3 times 3 MIMO systems under Rayleigh-fading environments is evaluated through simulations and measurements. True polarization diversity was found to be as significant as spatial diversity at improving diversity gain, and hence MIMO system capacity

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:5 ,  Issue: 1 )