Transmit diversity vs. spatial multiplexing in modern MIMO systems
A contemporary perspective on the tradeoff between transmit antenna diversity and/nspatial multiplexing is provided. It is argued that, in the context of most modern wireless/nsystems and for the operating points of interest, transmission techniques that utilize/nall available spatial degrees of fre...
| Autores: | , |
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| Formato: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2010 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10230/16119 |
| Acesso em linha: | http://hdl.handle.net/10230/16119 http://dx.doi.org/10.1109/TWC.2010.01.081381 |
| Access Level: | acceso abierto |
| Palavra-chave: | Tractament del senyal Comunicació sense fil, Sistemes de Ràdio -- Antenes Diversity Spatial Multiplexing OFDM MIMO DMT Multiantenna Communication |
| Resumo: | A contemporary perspective on the tradeoff between transmit antenna diversity and/nspatial multiplexing is provided. It is argued that, in the context of most modern wireless/nsystems and for the operating points of interest, transmission techniques that utilize/nall available spatial degrees of freedom for multiplexing outperform techniques that explicitly/nsacrifice spatial multiplexing for diversity. In the context of such systems, therefore,/nthere essentially is no decision to be made between transmit antenna diversity and spatial/nmultiplexing in MIMO communication. Reaching this conclusion, however, requires that/nthe channel and some key system features be adequately modeled and that suitable performance/nmetrics be adopted; failure to do so may bring about starkly different conclusions. As/na specific example, this contrast is illustrated using the 3GPP Long-Term Evolution system/ndesign. |
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