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...
- Reinaldo Gotz
- Taufik Abrão
- suboptimum search algorithms
- polynomial ex- panded multiuser detection
- Gerschgorin circles
- DS/CDMA
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...
- Leonel Arévalo
- Raimundo Sampaio Neto
- César A. Medina
- Block Transmission
- Single Carrier
- CDMA
- Fre- quency Selective Channel
- Ideal User Decoupling
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...
- 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
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 ...
- André L. F. de Almeida
- C. Alexandre R. Fernandes
- Daniel Benevides da Costa
- Cooperative diversity
- multiuser communications
- DS-CDMA
- PARAFAC
- blind receiver
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...
- 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