Accurate Estimation of Correlation and Capacity for Hybrid Spatial-Angular MIMO Systems
Autor
Valenzuela Valdés, Juan Francisco; Martínez González, Antonio Manuel; Sánchez Hernández, David AgapitoGrupo de investigación
Grupo de Ingeniería de Microondas, Radiocomunicaciones y Electromagnetismo (GIMRE)Área de conocimiento
Teoría de la Señal y las ComunicacionesPatrocinadores
This work was supported in part by the Spanish National R&D Program under Grant TEC2008-05811.Fecha de publicación
2009-10Editorial
IEEE Vehicular Technology SocietyCita bibliográfica
VALENZUELA 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 0018-9545Palabras clave
Funciones de correlaciónDipolo
Cámara multimodo
Correlation function
Dipole
Multimode chamber
Multiple input multiple output (MIMO)
Genetic Algorithm (GA)
Resumen
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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