XLIV Simpósio Brasileiro de Telecomunicações e Processamento de Sinais

Building upon a methodology previously established by the authors, this study leverages publicly available technical data from Base Stations (BS) deployment records compiled in the Mosaico database, maintained by the Brazilian National Telecommunications Agency (ANATEL), to systematically characterize buildings subject to direct exposure to...

Este trabalho apresenta uma análise comparativa de quatro algoritmos de Análise de Componentes Independentes (ICA - Independent Component Analysis) aplicados na correção de artefatos de sinais de eletroencefalografia (EEG) de pacientes com Doença de Parkinson em estado de repouso. Foram avaliados SOBI, FastICA, Infomax Estendido e AMICA, em que foram...

This paper investigates near-field multi-user beamfocusing using Extremely Large-Scale Multiple Input Multiple Output (XL-MIMO) systems, composed of a 100×100 dipole array operating at 28 GHz. The electromagnetic behavior of the array is modeled using the Method of Moments (MoM), allowing the calculation of the electric field in the near-field region....

Non-Terrestrial Networks (NTNs), standardized by 3GPP, integrate satellite constellations into 5G networks, requiring antennas optimized for direct satellite-to-device communication with maximum efficiency in the zenith direction. This article presents the design of a circular patch antenna with circular polarization (CP) for the 3GPP n255 band (uplink:...

In this work, we investigate a communication framework based on majorization relations between quantum states. Instead of encoding information directly into quantum states, classical symbols are associated with relational structures such as comparability and incomparability under majorization. We focus on qutrit systems and analyze how these relations...

Investigating Vehicle-to-Vehicle (V2V) networks requires models that reflect physical road traffic behaviors. Standard models assume vehicles travel at constant speeds, omitting the effects of acceleration and braking. This paper presents a method connecting discrete ray-tracing environment data with continuous vehicular movement. By applying a...

Network Slicing (NS) is a fundamental pillar of 5G and beyond networks, enabling the provisioning of isolated, logical networks tailored to specific Quality of Service (QoS) requirements. While 3GPP standards comprehensively define slicing architectures over cellular access networks, the seamless integration of Non-3GPP technologies such as Wi-Fi into a...

This study investigates Independent Vector Analysis (IVA) for the joint analysis of resting-state electroencephalography (EEG) recordings from individuals with autism spectrum disorder (ASD) and neurotypical controls. The proposed pipeline organizes EEG data into group-wise datasets, estimates IVA-derived latent representations, extracts temporal,...

Com a ascensão das redes 6G, a comunicação semântica emerge como um paradigma disruptivo para superar os limites de Shannon, ao focar na transmissão do significado da informação, em vez da reconstrução exata de bits. Este trabalho propõe e avalia uma arquitetura federada baseada em autoencoders para compressão semântica orientada a tarefas no banco de...

This work examines how thermal stress (0 ºC - 60 ºC) affects the physical entropy of commercial Quantum (QRNG) and True (TRNG) Random Number Generators. Using the NIST SP 800-90B test suite, we show that elevated and extreme temperatures induce hardware-level structural asymmetries. With the macroscopic chi-square test, we find that TRNG deteriorate...