XXXIX Simpósio Brasileiro de Telecomunicações e Processamento de Sinais

This work is part of the Prevention and Firefighting Devices (DPCI) project developed by extension students in highschool. This project aims to develop smart prevention and firefighting devices. In this particular device, an intelligent fire recognition system was developed. The development used a RaspBerry PI 4 plate which, due to its small size, can be...

The multichannel Wiener filter (MWF) and its versions have been extensively applied in hearing aids. Its major drawback is the binaural cue distortion of the residual noise, which impairs the user capacity for spatial localization of acoustic sources. The MWF-IC(phi_u) is a previously developed technique, which aims for joint speech dereverberation and...

This paper presents a new adaptive algorithm for solving the problem of joint beamforming and antenna selection in mobile communication systems. Such an algorithm is developed aiming to minimize the co-channel interference and satisfy an l0 norm constraint related to the limited number of radio-frequency chains available at the base station. The proposed...

O modelo estatístico α-η-κ-µ oferece uma descrição geral e unificada para todos os elementos essenciais do desvanecimento de curto prazo. Em um trabalho recente, propusemos um simulador para o processo α-η-κ-µ que comporta a faixa plena de valores para os parâmetros do modelo e cumpre as suas estatísticas de primeira e segunda ordens de forma...

Multi-user shared access is a non-orthogonal multiple access technique that has been considered as a potential solution for 5G and beyond wireless networks. However, its performance is affected by the propagation of the channel estimate error in the SIC algorithm in the multi-user detector. Deep neural networks can be used to improve the initial channel...

Resumo-Neste trabalho é apresentado um sistema de classificação, baseado na textura do padrão speckle, para determinação de 5 regiões em que uma fibra óptica é perturbada mecanicamente. É realizado um pré-processamento das imagens adquiridas experimentalmente, utilizando dois diferentes descritores de textura, o Local Binary Pattern (LBP) e a Gray Level...

Este artigo apresenta o desenvolvimento de um sistema robusto para classificação de pavimentação, fazendo uso de uma Máquina de Vetores de Suporte (SVM - Support Vector Machine) e o processamento de dados obtidos a partir de acelerômetros montados em um veículo. Os dados obtidos em um trajeto urbano foram separados em segmentos e destes foram extraídas...

With the growing demand for higher transmission rates, an alternative is to seek efficient ways of use for the resources in optical networks. Technologies such as flex grid, dynamically allocate the channels accordingly to the network demands. Automatic modulation classification techniques provide information that help to define some transmission...

In High Energy Physics experiments it is possible to measure the energy of the generated fundamental particles by estimating the amplitude of the signal coming from the reading electronics in calorimeters. Recently, it was proposed the implementation in FPGA of a Neural Network with activation function by lookup table seeking the estimation of the...

The fifth generation (5G) of the 3GPP communication network proposes a variety of use cases, from enhanced mobile broadband communications (eMBB), to ultra reliable low delay communications (URLLC), in addition to massive machine type communications (mMTC). This work proposes to develop a performance analysis of the use of carrier aggregation in the 5G...