This work describes a simple model for underwater acoustic (UWA) channels, taking into account Doppler effects. The performance of orthogonal frequency-di...

• Rafael S. Chaves
• Wallace A. Martins
• Paulo S. R. Diniz

• OFDM
• Underwater Acoustic Channel
• Doppler Effect

SBrT 2017

This work proposes the use of graph Fourier transform (GFT) for light field data compression. GFT is a tool developed for the emerging field of digital sign...

• Vitor Rosa Meireles Elias
• Wallace Alves Martins

• Signal Processing on Graphs
• Graph Fourier Transform
• Compression
• Light Field
• Discrete Cosine Transform

SBrT 2017

This paper proposes a computational platform for simulations of visible light communication (VLC) systems. Special emphasis is placed on the modeling of lig...

• Felipe Barboza da Silva
• Wallace Alves Martins

• Visible light communication
• light-emitting diode
• adaptive filters
• Volterra series
• decision-feedback equalizer

SBrT 2017

This paper presents an use of Ant Colony Optimization (ACO) algorithm for detection of hemorrhagic stroke (CVA) in computed tomography (CT) brain images. AC...

• Cecília Burle
• Walisson Soares
• Danilo Regis

• Hemorrhagic Stroke
• ACO
• Computed Tomography
• Image processing

SBrT 2017

Currently, satellite TV services present great co- verage and allow the transmission of audio and video infor- mation to distant locations, with the advant...

• Anderson S. de Jesus
• Rebeca N. Rodrigues
• Adolpho N. G. Ferreira
• Eddie B. L. Filho
• Waldir S. S. Júnior
• Victor H. Valente
• Wheidima C. Melo

• Digital Television
• Satellite Communications
• An- tenna Alignment
• DTH

SBrT 2017