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...

• Reinaldo Gotz
• Taufik Abrão

• suboptimum search algorithms
• polynomial ex- panded multiuser detection
• Gerschgorin circles
• DS/CDMA

SBrT 2012

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

• Leonel Arévalo
• Raimundo Sampaio Neto
• César A. Medina

• Block Transmission
• Single Carrier
• CDMA
• Fre- quency Selective Channel
• Ideal User Decoupling

SBrT 2012

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

• Washington C. de A. Costa
• F. M. de Assis
• B. G. Aguiar Neto
• Silvana C. Costa
• Vinı́cius J. D. Vieira

• Speech signal analysis
• laryngeal pathologies
• re- currence quantification measures

SBrT 2012

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 ...

• André L. F. de Almeida
• C. Alexandre R. Fernandes
• Daniel Benevides da Costa

• Cooperative diversity
• multiuser communications
• DS-CDMA
• PARAFAC
• blind receiver

SBrT 2012

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

• Rafael Fernandes Lopes
• Waslon Terllizzie Araujo Lopes
• Marcelo Sampaio de Alencar
• Wamberto Jose Lira de Queiroz

• Adaptive modulation
• Modulation diversity
• Per- formance evaluation.

SBrT 2012