XXXVII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais

In naval warfare, several techniques have been developed for the detection and classification of ships. Given the confidential nature of the data it is extremely difficult to get a hold of large quantities of data which makes it extremely hard to use techniques that rely on abundant data, like deep learning. This paper proposes the use of generative...

According to the National Water Agency (ANA), approximately 46.2% of all clean water used in Brazil is destined for irrigation, which has been motivating the evaluation of alternatives for water supply agricultural crops. Considering this scenario, this article presents the EXEHDA-SF proposal, which aims to explore Situation Awareness in the decision...

- Mobility has become a daily practice of physicians, so it is possible that they remain periods of time without contact with the teams that support them in the treatment of patients. Longer periods between communications can cause delays in performing procedures, drug prescribing, etc. Considering this scenario, this work has as objective the conception...

This paper presents a methodology for fetal electrocardiogram extraction in signals sampled using a technique known as compressive sampling. Two meters are used, one located on the chest and the other on the abdomen of a pregnant woman. In order to obtain the fetal electrocardiogram signal, an adaptive neuro-fuzzy inference system is used to estimate the...

The Finite-Difference Time-Domain Method (FDTD) is consolidated in the literature for a prediction of electromagnetic signals. In two dimensions (FDTD-2D), it is simple to implement and does not require large computational capacity in terms of memory and processing time. However, with two-dimensional methods, such as FDTD-2D, the attenuation of the...

Este trabalho apresenta a importância da utilização de pesos denominados Phase Transform (PHAT) na GCC para a correta estimação da TDoA em arranjos de dimensões reduzidas. Apresenta as variações GCC-NPHAT, GCC-\(\alpha\)PHAT e a composição destas GCC-\(\alpha\)NPHAT, que visam aumentar a robustez quando o sinal de interesse é espectralmente esparso e há...

Este trabalho apresenta os resultados de simulação para um sistema de transmissão óptica OAM no espaço livre sob efeito de turbulência atmosférica. Os momentos angulares orbitais, correspondendo aos símbolos de transmissão, são utilizados para modular um feixe laser no modo Laguerre-Gauss. Na recepção as imagens capturadas por uma câmera CCD são...

This work presents a new noise reduction technique for cochlear implants based on speech time-envelope estimates. Numerical simulations using an objective intelligibility criterion, corroborated by a psychoacoustic experiment with a cochlear implant user, indicate a consistent increase in the intelligibility in relation to raw contaminated speech signals...

Time-frequency filtering techniques have been used for noise reduction in cochlear implants with relative success. The Binary Mask and the Wiener Filter are among the most applied strategies, however they have limited conformation capability. In order to overcome this issue, alternatives have been proposed, such as the parametric Wiener Filter and...

Among the requirements of the next generation of mobile networks is the massive reduction in power consumption. The adoption of photovoltaic systems (SF) has been investigated in the literature, however the implementation costs are still challenging, and for an economically viable deployment it is necessary to size SF with minimum cost. Thus, this work...