DS/CDMA Multiuser Detectors Based on Subspace Methods
In this work blind and group-blind (Bld-MuD and SBld-MuD, respectively) multiuser detectors (MuD) are analyzed from the point of view of the trade-off between performance versus complexity; specifically, the blind and group-blind detectors are characterized based on the direct inversion of correlati...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2006 |
| País: | Brasil |
| Institución: | Universidade Estadual de Londrina (UEL) |
| Repositorio: | Revista Semina: Ciências Exatas e Tecnológicas (Online) |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs2.ojs.uel.br:article/1866 |
| Acceso en línea: | https://ojs.uel.br/revistas/uel/index.php/semexatas/article/view/1866 |
| Access Level: | acceso abierto |
| Palabra clave: | Blind and Group-Blind Detection Multiuser Detection DS/CDMA Orthogonal Vectors. Detecção Multiusuário Detectores Grupo-cegos e Cegos Vetores Ortogonais. Detectores |
| Sumario: | In this work blind and group-blind (Bld-MuD and SBld-MuD, respectively) multiuser detectors (MuD) are analyzed from the point of view of the trade-off between performance versus complexity; specifically, the blind and group-blind detectors are characterized based on the direct inversion of correlation matrix (DMI), the minimum mean square error (MMSE) and hybrid SBld-MuD in the forms I and II. Monte Carlo simulations (MCS) were carried out in order to prove analytical performance, being evidenced the superiority of SBld-MuD detectors. The contribution of this work consists of the compared analysis of the performance degradation for the three detectors, considering errors in the estimates of the channel and system parameters. MCS results indicated the superiority of the detector Hybrid SBld-MuD I, considering errors in the carrier phase and channel coefficients (module and phase) estimates. |
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