2010 - VII International Telecommunications Symposium
A (Very) Brief Survey on Optimization Methods for Wireless Communication Systems
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
Speaker Recognition Using Dynamic Features and The Null Space Combination of Classifiers in The Sub-band Domain
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
Lossless Multi-Grid Chain Code with Optimized Cell Usage for Contour Description of Visual Objects
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
Optimized Blind Algorithms for Widely Linear Beamforming
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
A Code for Correcting Quantum Erasures
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