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Título: Space-time processing with a decoupled delayed decision-feedback sequence estimator
Autor(es): Almeida, André Lima Férrer de
Panazio, C. M.
Cavalcanti, Francisco Rodrigo Porto
Fernandes, Carlos Estêvão Rolim
Palavras-chave: Teleinformática
Data do documento: 2002
Editor: Vehicular Technology Conference
Citação: ALMEIDA, A. L. F. ; PANAZIO, C. M. ; CAVALCANTI, F. R. P. ; FERNANDES, C. E. R. (2002)
Abstract: This work aims at investigating the performance of a Decoupled Space-Time processing structure based on a Delayed Decision-Feedback Sequence Estimator (D-ST-DDFSE), in the context of the Enhanced Data rates for GSM Evolution (EDGE) system. The main idea in using Decoupled Space-Time (D-ST) processing structures is to separate Co-Channel Interference (CCI) reduction from Inter-Symbol Interference (ISI) suppression. Consequently, all degrees of freedom of a space-time (ST) front-end are dedicated to treat CCI, leaving ISI to be suppressed by a temporal equalizer. Due to the 8-PSK modulation and the large delay spread values compared to the symbol period, optimum detection becomes too complex in the EDGE system, which makes DDFSE a promising scheme for ISI suppression. The performance of D-ST-DDFSE is analyzed through link-level simulations under the context of COST 259 channel models for Typical Urban (TU) and Bad Urban (BU) propagation scenarios. Improved performance of this D-ST technique over a space-time linear equalizer is observed.
Descrição: ALMEIDA, A. L. F. et al. Space-time processing with a decoupled delayed decision-feedback sequence estimator. In: VEHICULAR TECHNOLOGY CONFERENCE, 2002, Birmingham. Anais... Birmingham: Spring, 2002.
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