XLI Simpósio Brasileiro de Telecomunicações e Processamento de Sinais

Intelligent reflecting surface (IRS) is envisioned for beyond 5G systems due to its capacity to boost the spectral and energy efficiencies of wireless communications. The decoupled estimation of the involved communication channels is a non-trivial task in IRS-assisted wireless communications, especially for passive IRS structures. In this context, the...

In this paper, we investigate the synchronization between the signals generated by two Hindmarsh-Rose neurons connected by a chemical synapse. We evaluate the synchronization error as a function of the synaptic connection intensity using computer simulations, in which synchronization and desynchronization phenomena were observed.

Este artigo apresenta o projeto e a construção de um cruzamento com elementos concentrados (capacitores e indutores SMD) soldados em placa de circuito impresso em tecnologia de guia de onda coplanar aterrado (do inglês, Grounded Coplanar Waveguide - CPWG) para operar na frequência de 2,4 GHz. A simulação eletromagnética da estrutura projetada foi...

This work presents a purpose to accelerate the design process of mmWaves filters for 5G applications. To aim this objective, this work makes use of a technique of an artificial neural network called the multilayer perceptron. The model has 4 outputs and 6 inputs, where 2 outputs have a strong correlation and the other two have a weak correlation. By...

UAV-based MEC (MEC-UAV) is a solution that provides computing resources close to users in 5G networks when ground-based infrastructure is not available, enabling computation offloading services. However, since the UAV is a battery-powered device, both the application (e.g., latency) and the UAV's energy consumption are impacted by computational and...

The constant false alarm rate (CFAR) detection theory maintains good decision performance over statistical interference. For imagery applications, this class of detectors increases the processing complexity due to the element-wise matrix multiplication performed for each pixel resolution. Hence, the largest collected dataset implies computational...

Pessoa com perdas mais graves de audição costumam utilizar uma língua de sinais para se comunicar. Entretanto, o restante da população não costuma saber se comunicar usando linguagens de sinais. Explorando uma sub-área da visão computacional conhecida como Reconhecimento de Linguagens de Sinais (SLR), propomos um framework de baixo custo para classificar...

Television has been the most cost-effective platform for informing, educating and entertaining people around the world. In recent years new advanced Digital TV standards have been developed and implemented. Brazil has been evaluating these new technologies as a way of structuring and developing its new next-generation digital TV standard. This work...

Este trabalho tem como objetivo estudar o comportamento de antenas de microfita com substrato têxtil biodegradável para aplicações na tecnologia 5G, analisando o comportamento dessas antenas em superfície curva. Foram simuladas e medidas três antenas com substratos têxteis de algodão e poliéster. Os resultados apresentados mostraram que mesmo após...