Accurate Estimation of Correlation and Capacity for Hybrid Spatial-Angular MIMO Systems
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AuthorValenzuela Valdés, Juan Francisco; Martínez González, Antonio Manuel; Sánchez Hernández, David Agapito
Research GroupGrupo de Ingeniería de Microondas, Radiocomunicaciones y Electromagnetismo (GIMRE)
Knowledge AreaTeoría de la Señal y las Comunicaciones
SponsorsThis work was supported in part by the Spanish National R&D Program under Grant TEC2008-05811.
PublisherIEEE Vehicular Technology Society
Bibliographic CitationVALENZUELA VALDÉS, Juan F., MARTÍNEZ GONZÁLEZ, Antonio M., SÁNCHEZ HERNÁNDEZ, David A. Accurate Estimation of Correlation and Capacity for Hybrid Spatial-Angular MIMO Systems. IEEE Transactions on Vehicular Technology, 58 (8): 4036-4045, Octubre 2009. ISSN 0018-9545
KeywordsFunciones de correlación
Multiple input multiple output (MIMO)
Genetic Algorithm (GA)
In this paper, several novel functions for accurately estimating the correlation and the multiple-input–multiple-output (MIMO) capacity of combined spatial and true polarization diversity (TPD) schemes are proposed for the first time. Minimum error estimation of the correlation for a hybrid spatial–TPD linear scheme previously reported cannot be obtained by simple nonlinear least-square estimators, and the use of genetic algorithms (GAs) provides an accurate solution. Channel matrix coefficients and MIMO capacities are analyzed for the diverse optimization strategies employed, which aim to identify the best prediction of MIMO performance. The novel functions are used with previously reported results and validated for Rayleigh fading scenarios with isotropic scattering using a multimode-stirred chamber (MIMO Analyzer). An accurate prediction of high correlation values is concluded to be of extreme importance for the final MIMO performance estimation. This has been found to ...
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