The frequency bands used in mobile communications are allocated according to the type of application. With the need for more channels, the frequency spect...

• Fabrício de Araújo Carvalho
• Fernando Walter

• Digital Radio Broadcasting
• Spectral Efficiency
• Pseudo-random codes
• CDMA
• PWM.

SBrT 2012

The objective video quality assessment is a quick and low cost alternative compared with the subjective evaluation. However, the objective evaluation is no...

• Carlos D. M. Regis
• José V. de M. Cardoso
• Marcelo S. Alencar

• Video Quality Assessment
• Structural Similarity
• Visual Attention
• Spatial Perceptual Information
• Human Visual System.

SBrT 2012

This work analyzes the power allocation problem in DS/CDMA systems under the energy efficiency (EE) metric, maximizing the transmitted information per ener...

• Alvaro R. C. Souza
• Taufik Abraão
• Fábio R. Durand
• Lucas H. Sampaio
• Paul Jean E. Jeszensky

• Energy efficiency spectral efficiency DS/CDMA distributed power control

SBrT 2012

The objective of this work is to combine, improve, and develop algorithms for face detection and recognition so as to create a software-based system which ...

• Rodrigo L. Prates
• Marcelo B. Larcher
• José F. L. de Oliveira
• Eduardo A. B. da Silva

• Face Recognition
• Correlation Filters
• Scale Invariant Features

SBrT 2012

Neste trabalho, o modelo de Verhulst e o teorema de Perron-Frobenius são aplicados ao problema de controle de potência em redes de comunicação de múltiplo ac...

• Fábio Engel de Camargo
• Mario Lemes Proenc ̧a Jr
• Taufik Abrão

• PCA
• Perron-Frobenius
• Verhulst. controle de potência
• DSP

SBrT 2012