Wireless data usage is growing now faster than ever before. In order to attend the increasing demand for wireless services and considering that frequency s...

• A. A. P. Guimarães
• I. M. Guerreiro
• L. M. C. Sousa
• D. C. Moreira
• T. F. Maciel
• C. C. Cavalcante

• wireless communications
• optimization methods
• game theory
• majorization theory

SBrT 2010

In the context of object-based image compression, shape encoders that describe the contour of the objects, called chain codes, tend to be more efficient th...

• Fabiana O. P. Fernandes
• Willian G. de Almeida
• Flávia M. Freitas
• Abraham Alcaim

• shape encoding
• object-based image compression
• MPEG-4
• chain code
• grid cell

SBrT 2010

This paper investigates the inclusion of dynamic features in the input vectors used by the multiple classification scheme which employ the null space to co...

• Eduardo Esteves Vale
• Abraham Alcaim
• Rosângela Coelho

• Delta features
• delta-delta features
• multiple subband-classifiers
• speaker recognition

SBrT 2010

The use of array beamforming in modern wireless communication systems has been increasingly investigated, due to their potential in rejecting interference ...

• Adilson Chinatto
• Cynthia Junqueira
• João M. T. Romano

• widely linear processing
• blind algorithms
• CMA
• NCMA
• beamforming

SBrT 2010

Quantum states are very delicate, so quantum error-correction procedures are believed to be essential for the successful implementation of quantum communic...

• G. O. dos Santos
• F. M. de Assis
• A. F. de Lima

• quantum error-correction code
• quantum erasure
• GHZ states

SBrT 2010