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Most existing MIMO (Multiput-Input Multiput-Output) schemes optimize only either the diversity gain or the multiplexing gain. To obtain a good tradeoff between these two, the Quasi-Orthogonal Group Space-Time (QoGST) architecture is proposed, wherein the transmit stream is subgrouped but encoded via an inter-group space-time block encoder, with group interference suppression at the receiver. This paper also considers another combined space-time coding and layered space-time architecture, which we refer to as Group Layered Space-Time (GLST), where space-time block coding is employed within each group. Under the assumption of Rayleigh fading and a prior perfect channel state information at the receiver, a performance analysis will demonstrate that both QoGST and GLST can achieve a good diversity-multiplexing tradeoff. QoGST is even superior to GLST. Simulation results will validate our analysis and further show that compared to the existent Layered Space-Time Block Code (LSTBC) scheme, both QoGST and GLST can achieve a significant performance gain.

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Autor(es)

Dai, Lin -  Sfar, Sana -  Letaief, K. B. - 

Id.: 5666409

Idioma: inglés (Estados Unidos)  - 

Versión: 1.0

Estado: Final

Tipo:  491780 bytes -  application/pdf - 

Palabras claveGroup detection - 

Tipo de recurso: Preprint  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

Formatos:  491780 bytes -  application/pdf - 

Requerimientos técnicos:  Browser: Any - 

Fecha de contribución: 15-jun-2006

Contacto:

Localización:
* Submitted to IEEE Transactions on Wireless Communications

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