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Sociedade Brasileira de Telecomunicações

2012 - XXX Simpósio Brasileiro de Telecomunicações



Hybrid Local Search Polynomial-Expanded Linear Multiuser Detector

In order to reduce computational complexity in- herent to cross-correlation matrix inversion in DS/CDMA sys- tem, this work proposes a hybrid multiuser detec...

SBrT 2012


Brincando com Blocos: Uma Nova Combinação da Transmissão em Blocos com a Técnica de Múltiplo Acesso CDMA

This paper addresses a new possible combination of the single carrier (SC) block transmission and the Code Division Multiple Access (CDMA) techniques. Perf...

SBrT 2012


Pathological Voice Classification Based on Recurrence Quantification Measures

This paper presents an analysis of speech signals based on quantification measures of recurrence plots. A com- parison between healthy voices and voices af...

SBrT 2012


PARAFAC Receiver for Uplink Cooperative Relay-Assisted DS-CDMA Systems

In this paper, we consider the uplink of a multiuser cooperative DS-CDMA communication system, where each user communicates with the base station with the ...

SBrT 2012


Improving the Performance of Adaptive Modulation Systems by the Modulation Diversity Technique

This paper proposes a combination of the adap- tive modulation with the modulation diversity technique, which associates a suitable constellation rotation an...

SBrT 2012