XXXVIII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais

Most link-level simulators implement a communication link that can be seen as a particular implementation of a more generic transmission-reception (TX-RX) chain. These simulators also share common simulation capabilities among them. This work presents a technology-independent modular link-level simulator that may be customized with such a generic TX-RX...

Inserted in the context of network security in cyber-physical systems, this paper investigates vulnerabilities in communication between devices in a SCADA system and highlights attacks that aim to penetrate it and compromise services provided by a smart grid, which may (if successful) have any purpose, from financial to lethal damage. Therefore, as a...

In wireless sensor networks distributed beamforming is a cooperative technique to improve the received signal quality. In this work is proposed an open-loop distributed beamforming method for carrier phase alignment at receiving destination. The approach is inspired in Retrodirective Antenna Array and is based on the phase-conjugate of a pilot (beacon)...

Cognitive Radio and In-band Full-Duplex technologies have proven to be promising for the development of heterogeneous communications systems. In this work, we explored cooperation between primary and secondary users (PU-SU) through hybrid cognitive relays (HD/FD), as a new approach to spectral sharing, characterizing system aggregated interference and...

In wireless networked control systems, control and communication should not be considered independently. The co-design benefits for meeting the URLLC (Ultra-Reliable Low Latency Communication) requirements have already demonstrated that it is possible to improve resource utilization while increasing information traffic through the use of PPC (Packetized...

Sistemas esparsos ou dotados de determinada estrutura são comumente encontrados em aplicações de filtragem adaptativa. Algoritmos capazes de empregar essa propriedade para acelerar a convergência e/ou melhorar o desempenho em regime permanente são objeto de intenso estudo por parte da comunidade acadêmica nos últimos anos. Este artigo propõe um modelo...

Meteorological stations constantly monitor the climate using sensors to collect data that allow developing an adequate plan for the ordering and planning of city areas. Usually, collected data is transferred to the data center manually or using cellular or satellite networks, which increases the operating cost of the system. Thus, it is necessary to...

This project aims to study an arm controlled by a brain-computer interface (BCI) based on electroencephalogram (EEG) signals. The project involved the construction of a robotic arm that can be controlled by neural signals to perform a group of actions, such as picking up and moving an object between two predefined positions. The model of the robotic arm...

A crescente demanda pelo uso de sistemas de comunicação sem fio, associada a também crescente infraestrutura de iluminação por meio de luminárias LED (diodos emissores de luz), impulsionam estudos para viabilização de sistemas de comunicação por luz visível (Visible Light Communication - VLC). Neste trabalho, é apresentado o estudo de desempenho de um...

The work assessed seven classical classifiers and two beamforming algorithms for detecting surveillance sound events. The tests included the use of AWGN with -10 dB to 30 dB SNR. Data Augmentation (DA) was also employed to improve algorithms' performance. The results showed that the combination of SVM and Delay-and-Sum (DaS) scored the best accuracy (up...